摘要:30.下列多肽在人消化道中水解时.不可能产生的氨基酸是 ( ) O O O O O | | | | | NH2-CH-C-N-CH2-C-N-CH-C-N-CH-C-N-CH2-C-OH ︱ ︱ ︱ ︱ ︱ ︱ ︱ CH2 H H CH3 H CH2 H ︱ ︱ SH CH3 A. H B. H ︱ ︱ CH3-C-COOH CH2-C-COOH ︱ ︱ ︱ NH2 NH2 NH2 C. H D. H ︱ ︱ CH2-C-COOH H-C-COOH ︱ ︱ ︱ SH NH2 NH2 第Ⅱ卷

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下列多肽在人消化道中水解时,不可能产生的氨基酸是

           O         O          O         O          O

          ‖          ‖          ‖         ‖          ‖

NH2—CH—C—N—CH2—C—N—CH—C—N—CH—C—N—CH2—C—OH

     ︱      ︱          ︱  ︱      ︱ ︱     ︱

    CH2      H          H   CH3    H  CH2     H

    ︱                               ︱

    SH                              CH3

A.  H                       B.        H

     ︱                                ︱

CH3—C—COOH                    CH2—C—COOH

     ︱                             ︱  ︱

     NH2                                         NH2 NH2

 

C.   H                       D.         H

     ︱                                 ︱

CH2—C—COOH                      H—C—COOH

︱   ︱                                 ︱     

SH     NH2                                               NH2

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