Question 3 (. In this question the single letter abbreviations are used for amino acid residues, but it doesn't matter if you know what amino acids they refer to. A protein, P, is a nonapeptide. When P is treated with trypsin, 2 peptides are formed: #1 = AAWGK (pentapeptide) # 2 = TNVK (tetrapeptide) When P is treated with chymotrypsin, 3 peptides are formed: # 3 = VKAAW (pentapeptide) !3! # 4 = TN (dipeptide) %3! # 5 = GK (dipeptide) !3! What is the complete sequence of the protein P? a) TNVKAAWGK O b) VKAAWGKTN O c) TNGKVKAAW d) AAWGKTNVK

Organic And Biological Chemistry
7th Edition
ISBN:9781305081079
Author:STOKER, H. Stephen (howard Stephen)
Publisher:STOKER, H. Stephen (howard Stephen)
Chapter9: Proteins
Section: Chapter Questions
Problem 9.57EP
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Question 3 (.
In this question the single letter abbreviations are used for amino acid residues, but it
doesn't matter if you know what amino acids they refer to.
A protein, P, is a nonapeptide. When P is treated with trypsin, 2 peptides are formed:
#1 = AAWGK (pentapeptide)
%3D
# 2 = TNVK (tetrapeptide)
%3!
When P is treated with chymotrypsin, 3 peptides are formed:
# 3 = VKAAW (pentapeptide)
%3D
# 4 = TN (dipeptide)
%3D
#5 - GK (dipeptide)
!3!
What is the complete sequence of the protein P?
O a) TNVKAAWGK
O b) VKAAWGKTN
c) TNGKVKAAW
d) AAWGKTNVK
Transcribed Image Text:Question 3 (. In this question the single letter abbreviations are used for amino acid residues, but it doesn't matter if you know what amino acids they refer to. A protein, P, is a nonapeptide. When P is treated with trypsin, 2 peptides are formed: #1 = AAWGK (pentapeptide) %3D # 2 = TNVK (tetrapeptide) %3! When P is treated with chymotrypsin, 3 peptides are formed: # 3 = VKAAW (pentapeptide) %3D # 4 = TN (dipeptide) %3D #5 - GK (dipeptide) !3! What is the complete sequence of the protein P? O a) TNVKAAWGK O b) VKAAWGKTN c) TNGKVKAAW d) AAWGKTNVK
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