A mixture of three peptides is provided to you. The sequences of the three peptides are known: 1. HHHHH (pl = 7.16) 2. wwwww (pl = 5.52) 3. YYYYE (pl= 4.00) Which of these three peptides would not have absorbance at 280 nm? Select all that apply Peptide 1 Peptide 2 Peptide 3 Which of the following purification protocols would best separate the three peptides in question #4 without using denaturing conditions? Size exclusion and hydrophobic interaction chromatography O Anion exchange chromatography and hydrophobic interaction chromatography O Maltose-affinity chromatography and isoelectric focusing O SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and anion exchange chromatography

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
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Bb.45.

 

A mixture of three peptides is provided to you. The sequences of the three
peptides are known:
1. HHHHH (pl = 7.16)
2. WWWWW (pl = 5.52)
3. YYYYE (pl = 4.00)
Which of these three peptides would not have absorbance at 280 nm?
Select all that apply
Peptide 1
Peptide 2
O Peptide 3
Which of the following purification protocols would best separate the three
peptides in question #4 without using denaturing conditions?
O Size exclusion and hydrophobic interaction chromatography
O Anion exchange chromatography and hydrophobic interaction chromatography
O Maltose-affinity chromatography and isoelectric focusing
O SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and anion exchange
chromatography
Transcribed Image Text:A mixture of three peptides is provided to you. The sequences of the three peptides are known: 1. HHHHH (pl = 7.16) 2. WWWWW (pl = 5.52) 3. YYYYE (pl = 4.00) Which of these three peptides would not have absorbance at 280 nm? Select all that apply Peptide 1 Peptide 2 O Peptide 3 Which of the following purification protocols would best separate the three peptides in question #4 without using denaturing conditions? O Size exclusion and hydrophobic interaction chromatography O Anion exchange chromatography and hydrophobic interaction chromatography O Maltose-affinity chromatography and isoelectric focusing O SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and anion exchange chromatography
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