KLEINER PERKINS CAUFIELD & BYERS VI LP
SC 13G, 1997-02-14
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 SCHEDULE 13G

                   Under the Securities Exchange Act of 1934
                               (Amendment No. )*

                        MICROCIDE PHARMACEUTICALS, INC.
- --------------------------------------------------------------------------------
                               (Name of Issuer)


                                 COMMON STOCK
- --------------------------------------------------------------------------------
                        (Title of Class of Securities)


                                  005950 18 1
- --------------------------------------------------------------------------------

                                (CUSIP NUMBER)

CHECK THE FOLLOWING BOX IF A FEE IS BEING PAID WITH THIS STATEMENT [_]. (A FEE
IS NOT REQUIRED IF THE FILING PERSON: (1) HAS A PREVIOUS STATEMENT ON FILE
REPORTING BENEFICIAL OWNERSHIP OF MORE THAN FIVE PERCENT OF THE CLASS OF
SECURITIES DESCRIBED IN ITEM 1; AND (2) HAS FILED NO AMENDMENT SUBSEQUENT
THERETO REPORTING BENEFICIAL OWNERSHIP OF FIVE PERCENT OR LESS OF SUCH CLASS.)
(SEE RULE 13D-7).


*THE REMAINDER OF THIS COVER PAGE SHALL BE FILLED OUT FOR A REPORTING PERSON'S
INITIAL FILING ON THIS FORM WITH RESPECT TO THE SUBJECT CLASS OF SECURITIES, AND
FOR ANY SUBSEQUENT AMENDMENT CONTAINING INFORMATION WHICH WOULD ALTER
DISCLOSURES PROVIDED IN A PRIOR COVER PAGE.

THE INFORMATION REQUIRED ON THE REMAINDER OF THIS COVER PAGE SHALL NOT BE DEEMED
TO BE "FILED" FOR THE PURPOSE OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF
1934 ("ACT") OR OTHERWISE SUBJECT TO THE LIABILITIES OF THAT SECTION OF THE ACT
BUT SHALL BE SUBJECT TO ALL OTHER PROVISIONS OF THE ACT (HOWEVER, SEE THE
NOTES).

                        (CONTINUED ON FOLLOWING PAGES)

                              Page 1 of 17 Pages
                      Exhibit Index Contained on Page 14
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 005950 18 1                 13G                PAGE 2 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
          Kleiner Perkins Caufield & Byers VI, L.P., a
          California Limited Partnership ("KPCB VI")
          94-3157816     
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [x]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4        California Limited Partnership


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF            
                                                                        - 0 -
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6    

     OWNED BY                                                       1,350,000
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7     
    REPORTING             
                                                                        - 0 -  
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8    
                                                                    1,350,000
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9    
      
                                                                    1,350,000   
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
 
                                                                          [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      
                                                                        12.6%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      
                                                                           PN 
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
 CUSIP NO. 005950 18 1                  13G                PAGE 3 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
          KPCB VI Associates, L.P., a California Limited
          Partnership ("KPCB VI Associates") 94-3158010 
          
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [x]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4        California Limited Partnership


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF            
                                                                        - 0 -
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6    1,350,000 shares directly held by
                          KPCB VI.  KPCB VI Associates is the 
     OWNED BY             general partner of KPCB VI.           
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7     
    REPORTING             
                                                                        - 0 -  
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8    1,350,000 shares directly held by
                          KPCB VI.  KPCB VI Associates is the  
                          general partner of KPCB VI.     
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9    
      
                                                                    1,350,000   
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
 
                                                                          [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      
                                                                        12.6%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      
                                                                           PN 
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
 CUSIP NO. 005950 18 1                  13G                PAGE 4 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          

          Brook H. Byers          
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [x]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4        United States                 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF            
                                                                        8,108 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY           6    1,350,000 shares directly held by
                          KPCB VI.  KPCB VI Associates is the
     OWNED BY             general partner of KPCB VI.  Mr. Byers
                          is a general partner of KPCB VI
       EACH               Associates.  Mr. Byers disclaims
                          beneficial ownership of shares held
    REPORTING             directly by KPCB VI.  In addition, the
                          Brook H. Byers Trust holds 1,820
      PERSON              shares, beneficial ownership of which
                          Mr. Byers disclaims.    
       WITH        ----------------------------------------------------------
                          SOLE DISPOSITIVE POWER
                     7     
                 
                                                                        8,108 
                   -----------------------------------------------------------
                  
                     8    SHARED DISPOSITIVE POWER                
                          1,350,000 shares directly held by       
                          KPCB VI.  KPCB VI Associates is the     
                          general partner of KPCB VI.  Mr. Byers  
                          is a general partner of KPCB VI         
                          Associates.  Mr. Byers disclaims        
                          beneficial ownership of shares held     
                          directly by KPCB VI.  In addition, the  
                          Brook H. Byers Trust holds 1,820        
                          shares, beneficial ownership of which   
                          Mr. Byers disclaims.                     
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9    
      
                                                                    1,359,928
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
 
                                                                          [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      
                                                                        12.7%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      
                                                                           IN 
- ------------------------------------------------------------------------------

                     * SEE INSTRUCTIONS BEFORE FILLING OUT! 
<PAGE>
 
- -----------------------                                  ---------------------
 CUSIP NO. 005950 18 1                  13G                PAGE 5 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          

          Vinod Khosla            
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4        United States                 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF            
                                                                        3,062  
     SHARES       ----------------------------------------------------------- 
                                                                   
                     6     SHARED VOTING POWER    
  BENEFICIALLY             1,350,000 shares directly held by    
                           KPCB VI, and 3,346 shares held     
    OWNED BY               indirectly through the Vinod & Neeru     
                           Khosla Trust.  KPCB VI Associates is     
                           the general partner of KPCB VI.      
                           Mr. Khosla is a general partner of     
                           KPCB VI Associates.  Mr. Khosla     
                           disclaims beneficial ownership of     
                           shares held directly by KPCB VI and the 
                           Vinod & Neeru Khosla Trust.      
                  ----------------------------------------------------------- 
       EACH          7     SOLE DISPOSITIVE POWER                       3,062  
                  -----------------------------------------------------------  
                       
    REPORTING             
                                                                        
                   -----------------------------------------------------------
                  
      PERSON         8    SHARED DISPOSITIVE POWER     
                          1,350,000 shares directly held by     
       WITH               KPCB VI, and 3,346 shares held      
                          indirectly through the Vinod & Neeru      
                          Khosla Trust.  KPCB VI Associates is      
                          the general partner of KPCB VI.       
                          Mr. Khosla is a general partner of      
                          KPCB VI Associates.  Mr. Khosla      
                          disclaims beneficial ownership of      
                          shares held directly by KPCB VI and the  
                          Vinod & Neeru Khosla Trust.       
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9    
      
                                                                    1,356,408
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
 
                                                                          [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      
                                                                         12.7
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      
                                                                           IN 
- ------------------------------------------------------------------------------

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!     


<PAGE>
 
- -----------------------                                  ---------------------
 CUSIP NO. 005950 18 1                  13G                PAGE 6 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          

          E. Floyd Kvamme         
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [x]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4        United States                 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF            
                                                                        4,962  
      SHARES       ----------------------------------------------------------- 
                                                                   
   BENEFICIALLY      6    SHARED VOTING POWER              
                          1,350,000 shares directly held by              
     OWNED BY             KPCB VI.  KPCB VI Associates is the               
                          general partner of KPCB VI.  Mr. Kvamme        
       EACH               is a general partner of KPCB VI               
                          Associates.  Mr. Kvamme disclaims               
     REPORTING            beneficial ownership of shares held               
                          directly by KPCB VI.                
      PERSON       ----------------------------------------------------------- 
                          SOLE DISPOSITIVE POWER                        
       WITH          7                                                      
                                                                        4,962
                   -----------------------------------------------------------
                  
                     8    SHARED DISPOSITIVE POWER           
                          1,350,000 shares directly held by           
                          KPCB VI.  KPCB VI Associates is the            
                          general partner of KPCB VI.  Mr. Kvamme     
                          is a general partner of KPCB VI            
                          Associates.  Mr. Kvamme disclaims            
                          beneficial ownership of shares held            
                          directly by KPCB VI.             
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9    
      
                                                                    1,354,962   
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
 
                                                                          [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      
                                                                         12.7
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      
                                                                           IN 
- ------------------------------------------------------------------------------

                    * SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
 CUSIP NO. 005950 18 1                  13G                PAGE 7 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          

          L. John Doerr           
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [x]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4        United States                 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF            
                                                                        9,840  
       SHARES       ----------------------------------------------------------- 
                                                                   
    BENEFICIALLY     6    SHARED VOTING POWER            
                          1,350,000 shares directly held by 
      OWNED BY            KPCB VI.  KPCB VI Associates is the   
                          general partner of KPCB VI.  Mr. Doerr
        EACH              is a general partner of KPCB VI       
                          Associates.  Mr. Doerr disclaims      
     REPORTING            beneficial ownership of shares held         
                          directly by KPCB VI.  In addition, the
       PERSON             Child(ren) of L. John Doerr Trust holds
                          1,820 shares, beneficial ownership of 
        WITH              which Mr. Doerr disclaims.          
                     ----------------------------------------------------------
                          SOLE DISPOSITIVE POWER
                     7     
                                                                        9,840  
                    ----------------------------------------------------------
                  
                     8   SHARED DISPOSITIVE POWER 1,350,000 shares directly held
                         by KPCB VI. KPCB VI Associates is the general partner
                         of KPCB VI. Mr. Doerr is a general partner of KPCB VI
                         Associates. Mr. Doerr disclaims beneficial ownership of
                         shares held directly by KPCB VI. In addition, the
                         Child(ren) of L. John Doerr Trust holds 1,820 shares,
                         beneficial ownership of which Mr. Doerr disclaims.
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9    
      
                                                                    1,361,660   
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10                  
 
                                                                          [_]
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11    
      
                                                                        12.8%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12
      
                                                                           IN 
- ------------------------------------------------------------------------------

                    * SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 005950 18 1                 13G                PAGE 8 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
        Joseph S. Lacob
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4      United States 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF                                                          6,645

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6    1,350,000 shares directly held by
     OWNED BY             KPCB VI.  KPCB VI Associates is the
                          general partner of KPCB VI.  Mr. Lacob
       EACH               is a general partner of KPCB VI
                          Associates.  Mr. Lacob disclaims 
    REPORTING             beneficial ownership of shares held
                          directly by KPCB VI. 
      PERSON       -----------------------------------------------------------
                          SOLE DISPOSITIVE POWER   
                     7                                                  6,645


                   -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8    1,350,000 shares directly held by    
                          KPCB VI.  KPCB VI Associates is the  
                          general partner of KPCB VI.  Mr. Lacob
                          is a general partner of KPCB VI      
                          Associates.  Mr. Lacob disclaims     
                          beneficial ownership of shares held  
                          directly by KPCB VI.                  
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                        
                                                                    1,356,645 
                          
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 
 10                                                                       [_]
                 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 11                                                                     12.7%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
 12                                                                        IN
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 005950 18 1                 13G                PAGE 9 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
        Bernard Lacroute
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4      United States 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF                                                          6,644

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6    1,350,000 shares directly held by
     OWNED BY             KPCB VI.  KPCB VI Associates is the
                          general partner of KPCB VI.  Mr. Lacroute
       EACH               is a general partner of KPCB VI
                          Associates.  Mr. Lacroute disclaims 
    REPORTING             beneficial ownership of shares held
                          directly by KPCB VI. 
      PERSON       -----------------------------------------------------------
                          SOLE DISPOSITIVE POWER   
                     7                                                  6,644


                   -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8    1,350,000 shares directly held by    
                          KPCB VI.  KPCB VI Associates is the  
                          general partner of KPCB VI.  Mr. Lacroute
                          is a general partner of KPCB VI      
                          Associates.  Mr. Lacroute disclaims     
                          beneficial ownership of shares held  
                          directly by KPCB VI.                  
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                        
                                                                    1,356,644 
                          
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 
 10                                                                       [_]
                 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 11                                                                     12.7%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
 12                                                                        IN
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 005950 18 1                 13G               PAGE 10 OF 17 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
        James P. Lally
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4      United States 


- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5     
     NUMBER OF                                                          9,493

      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6    1,350,000 shares directly held by
     OWNED BY             KPCB VI.  KPCB VI Associates is the
                          general partner of KPCB VI.  Mr. Lally
       EACH               is a general partner of KPCB VI
                          Associates.  Mr. Lally disclaims 
    REPORTING             beneficial ownership of shares held
                          directly by KPCB VI. 
      PERSON       -----------------------------------------------------------
                          SOLE DISPOSITIVE POWER   
                     7                                                  9,493


                   -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8    1,350,000 shares directly held by    
                          KPCB VI.  KPCB VI Associates is the  
                          general partner of KPCB VI.  Mr. Lally
                          is a general partner of KPCB VI      
                          Associates.  Mr. Lally disclaims     
                          beneficial ownership of shares held  
                          directly by KPCB VI.                  
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                        
                                                                    1,359,493 
                          
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 
 10                                                                       [_]
                 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 11                                                                     12.7%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
 12                                                                        IN
- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
                                                                   Page 11 of 17

ITEM 1(A).   NAME OF ISSUER.
             -------------- 

             Microcide Pharmaceuticals, Inc.

ITEM 1(B).   ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES.
             ----------------------------------------------- 

             875 Battery Street
             San Francisco, California 94111

ITEM 2(A)-(C).   NAME, ADDRESS AND CITIZENSHIP OF PERSONS FILING.
                 ----------------------------------------------- 

             This statement is being filed by KPCB VI Associates, L.P., a
California Limited Partnership ("KPCB VI Associates"), whose principal business
address is 2750 Sand Hill Road, Menlo Park, California 94025.  The names,
business addresses and citizenships of all the general partners of KPCB VI
Associates, are set forth on Exhibit B hereto.

             KPCB VI Associates is general partner to Kleiner Perkins Caufield &
Byers VI, L.P., a California limited partnership ("KPCB VI").  With respect to
KPCB VI Associates, this statement relates only to KPCB VI Associates' indirect,
beneficial ownership of the shares of Common Stock of Microcide Pharmaceuticals,
Inc. held directly by KPCB VI (the "Shares") and, with respect to the general
partners of KPCB VI Associates, to the extent applicable, to the shares over
which each general partner exercises sole voting and dispositive control or are
held directly by trusts.  Management of the business affairs of KPCB VI
Associates, including decisions respecting disposition and/or voting of the
Shares, is by majority decision of the general partners of KPCB VI Associates
listed on Exhibit B hereto, each general partner of whom disclaims beneficial
ownership of the Shares.


ITEM 2(D) AND (E).  TITLE OF CLASS OF SECURITIES AND CUSIP NUMBER.
                    --------------------------------------------- 

             Common Stock
             CUSIP # 005950 18 1

ITEM 3.      Not Applicable.
             -------------- 

ITEM 4.      OWNERSHIP.
             --------- 

             See Rows 5-11 of the cover pages hereto.

ITEM 5.      OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
             -------------------------------------------- 

             Not applicable.
<PAGE>
 
                                                                   Page 12 of 17

ITEM 6.      OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
             --------------------------------------------------------------- 

             Under certain circumstances set forth in the limited partnership
             agreements of KPCB VI and KPCB VI Associates, the general and
             limited partners of such entities may have the right to receive
             dividends from, or the proceeds of the sale of the Shares of
             Microcide Pharmaceuticals, Inc. held by each such entity. No such
             partner's rights relate to more than five percent of the class.

ITEM 7.      IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
             ------------------------------------------------------------------
             THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.
             ------------------------------------------------------------ 

             Not applicable.

ITEM 8.      IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
             --------------------------------------------------------- 

             Not applicable.

ITEM 9.      NOTICE OF DISSOLUTION OF GROUP.
             ------------------------------ 

             Not applicable.

ITEM 10.     CERTIFICATION.
             ------------- 

             Not applicable.
<PAGE>
 
                                                                   Page 13 of 17

                                  SIGNATURES
                                  ----------

             After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.

Dated:  February 13, 1997

                                 KPCB VI ASSOCIATES, L.P.,
                                 A CALIFORNIA LIMITED PARTNERSHIP


                                 By: ________________________________
                                     A General Partner


                                 BROOK H. BYERS
                                 VINOD KHOSLA
                                 E. FLOYD KVAMME
                                 L. JOHN DOERR
                                 JOSEPH S. LACOB
                                 BERNARD LACROUTE
                                 JAMES P. LALLY


                                 By: ________________________________
                                     Michael S. Curry
                                     Attorney-in-Fact


                                 KLEINER PERKINS CAUFIELD & BYERS
                                 VI, L.P., A CALIFORNIA LIMITED
                                 PARTNERSHIP

                                 By KPCB VI Associates, L.P., a California
                                 limited partnership, its General Partner


                                 By: ________________________________
                                     A General Partner
<PAGE>
 
                                                                   Page 14 of 17

                                 EXHIBIT INDEX
                                 -------------


                                                                   Found on   
                                                                 Sequentially 
Exhibit                                                          Numbered Page
- -------                                                          ------------- 

Exhibit A:  Agreement of Joint Filing                                 15

Exhibit B:  List of General Partners of KPCB VI Associates            16
<PAGE>
 
                                                                   Page 15 of 17

                                   EXHIBIT A
                                   ---------

                           Agreement of Joint Filing
                           -------------------------


             The undersigned hereby agree that they are filing jointly pursuant
to Rule 13d-1 of the Act the statement dated February 13, 1997, containing the
information required by Schedule 13G, for the 1,350,000 Shares of Common Stock
of Microcide Pharmaceuticals, Inc. held by Kleiner Perkins Caufield & Byers VI,
L.P., a California limited partnership, and other such holdings as are reported
therein.


Date:  February 13, 1997

                              KPCB VI ASSOCIATES, L.P.,
                              A CALIFORNIA LIMITED PARTNERSHIP


                              By: ________________________________
                                  A General Partner


                              BROOK H. BYERS
                              VINOD KHOSLA
                              E. FLOYD KVAMME
                              L. JOHN DOERR
                              JOSEPH LACOB
                              BERNARD LACROUTE
                              JAMES P. LALLY


                              By: ________________________________
                                  A General Partner

                              KLEINER PERKINS CAUFIELD & BYERS
                              VI, L.P., A CALIFORNIA LIMITED
                              PARTNERSHIP

                              By KPCB VI Associates, L.P., a California
                              limited partnership, its General Partner


                              By: ________________________________
                                  A General Partner
<PAGE>
 
                                                                   Page 16 of 17

                                   EXHIBIT B
                                   ---------

                              General Partners of
              KPCB VI Associates, a California limited partnership
              ----------------------------------------------------


             Set forth below, with respect to each general partner of KPCB VI
Associates, is the following:  (a) name; (b) business address and (c)
citizenship.

1.  (a)   Brook H. Byers
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen
 
2.  (a)   Vinod Khosla
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen
 
3.  (a)   E. Floyd Kvamme
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen
 
4.  (a)   L. John Doerr
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen
 
5.  (a)   Joseph Lacob
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen
<PAGE>
 
                                                                   Page 17 of 17

6.  (a)   Bernard Lacroute
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen

7.  (a)   James P. Lally
    (b)   c/o Kleiner Perkins Caufield & Byers
          2750 Sand Hill Road
          Menlo Park, CA  94025
    (c)   United States Citizen


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