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As you increase the number of alanine residues in the oligopeptide chain: The pKas of the carboxylate groups will [increase, decrease, stay the same] The pKas of the amino groups will [increase, decrease, stay the same]

As you increase the number of alanine residues in the oligopeptide chain: The pKas of the carboxylate groups will [increase, decrease, stay the same] The pKas of the amino groups will [increase, decrease, stay the same]

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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As you increase the number of alanine residues in the oligopeptide chain:

  • The pKas of the carboxylate groups will [increase, decrease, stay the same]
  • The pKas of the amino groups will [increase, decrease, stay the same]
Given below are structures of alanine and some alanine oligomers, H,N-CH- COO CH, H,N-CH-c-NH-CH-coo CH, CH, CH, H,N-CH-C-NH-CH-C -C-NH-CH-coo CH, H,N-O-c-NH-O-c-N-O-ç-NH--coo Each of the charged groups in each of the structures have a pka value. What do you think will be the trend of the pK,s as you increase the number of alanine residues in the oligopeptide chain (that is, as you go from the monomeric alanine towards the longest alanine oligomer)? As you increase the number of alanine residues in the oligopeptide chain:
Transcribed Image Text:Given below are structures of alanine and some alanine oligomers, H,N-CH- COO CH, H,N-CH-c-NH-CH-coo CH, CH, CH, H,N-CH-C-NH-CH-C -C-NH-CH-coo CH, H,N-O-c-NH-O-c-N-O-ç-NH--coo Each of the charged groups in each of the structures have a pka value. What do you think will be the trend of the pK,s as you increase the number of alanine residues in the oligopeptide chain (that is, as you go from the monomeric alanine towards the longest alanine oligomer)? As you increase the number of alanine residues in the oligopeptide chain:
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