QUESTION 20 How many amino acid side chains in this peptide are capable of absorbing light at 280nm? CON O 4 0 3 01 O none

Biochemistry
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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
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Question 20
QUESTION 20
How many amino acid side chains in this peptide are capable of absorbing light at 280nm?
O 4
O 2
O none
QUESTION 21
Consider the following proteins with their p/ values (apply the basic concept of the pl to answer the question)
Protein
pl
10.2
II
5.7
7.0
8.5
anion exchange column at pH 7.0 would most likely be protein
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38 Q #
O
Sh Spt
your
Transcribed Image Text:QUESTION 20 How many amino acid side chains in this peptide are capable of absorbing light at 280nm? O 4 O 2 O none QUESTION 21 Consider the following proteins with their p/ values (apply the basic concept of the pl to answer the question) Protein pl 10.2 II 5.7 7.0 8.5 anion exchange column at pH 7.0 would most likely be protein lick Save All Answers to save all answers. 38 Q # O Sh Spt your
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Step 1

Aromatic amino acids such as tryptophan, tyrosine and phenylalanine absorb UV light. Aromatic compounds consists of conjugated single and double bond. These aromatic side chain are responsible for the absorption of UV light. Tryptophan and tyrosine absorb 280 nm light maximumly. 

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