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Proteins and Amino Acids

29. Amino Acids / Proteins and Amino Acids / Problem 4

Which tripeptide has a more readily cleaved C-terminal peptide bond by Carboxypeptidase A and why? Gly-Val-Glu or Gly-Val-Leu

A

Gly-Val-Leu has a more readily cleaved C-terminal peptide bond by Carboxypeptidase A because Gly has a nonpolar substituent.

B

Gly-Val-Glu has a more readily cleaved C-terminal peptide bond by Carboxypeptidase A because Gly has a polar substituent.

C

Gly-Val-Leu has a more readily cleaved C-terminal peptide bond by Carboxypeptidase A because Leu has a nonpolar substituent.

D

Gly-Val-Glu has a more readily cleaved C-terminal peptide bond by Carboxypeptidase A because Glu has a polar substituent.

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