Two monomeric His-tagged proteins of identical molecular weight are present in a solution. pIs of these two proteins are 5.6 and 6.8. Which one of the following techniques can be used to separate them?
A. Denaturing polyacrylamide gel electrophoresis
B. Size-exclusion chromatography
C. Ion-exchange chromatography
D. Nickel affinity chromatography
Answer: Option C
Related Questions on Bioprocess Engineering and Process Biotechnology
Which of the following techniques is best suited for immobilizing an affinity ligand?
A. Physical adsorption
B. Gel entrapment
C. Crosslinking with a polymer
D. Covalent linkage to a spacer arm
Which one of the following can not be a limiting substrate if Monod's growth kinetics is applicable?
A. Extracellular carbon source
B. Extracellular nitrogen source
C. Dissolved oxygen
D. Intracellular carbon source
A. P-2, Q-3, R-1, S-4
B. P-1, Q-2, R-4, S-3
C. P-3, Q-2, R-4, S-1
D. P-3, Q-4, R-2, S-1
A. 10 h
B. 0.2 h
C. 4.6 h
D. None of the above
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