A protein of interest needs to be separated from a mixture of proteins for amino acid sequencing. It is known that the protein of interest is highly enriched in lysine residues compared to the other proteins in the mixture. Which of the following techniques will be most effective in isolating this protein?
options:
a) gel-filtration chromatography
b) SDS-polyacrylamide gel electrophoresis
c) mass spectrometry
d) cation exchange chromatography
e) anion exchange chromatography
2. Consider a mixture of three peptides. The three peptides have the following primary structure:
A) asp-asp-val
B) glu-asp-glu
C) val-val-lys
Determine the net charge of each peptide at pH 7. From this, in what order will these peptides elute from an anion exchange column at pH 7?
options:
a) A will elute first, followed by B then C.
b) B will elute first, followed by C then A.
c) C will elute first, followed by A then B.
d) B will elute first, followed by A then C.
e) Not enough information is provided to determine the elution order.
A protein of interest needs to be separated from a mixture of proteins for amino acid sequencing. It is known that the protein of interest is highly enriched in lysine residues compared to the other proteins in the mixture. Which of the following techniques will be most effective in isolating this protein?
options:
a) | gel-filtration chromatography | ||||||||||
b) | SDS-polyacrylamide gel electrophoresis | ||||||||||
c) | mass spectrometry | ||||||||||
d) | cation exchange chromatography | ||||||||||
e) | anion exchange chromatography 2. Consider a mixture of three peptides. The three peptides have the following primary structure: A) asp-asp-val B) glu-asp-glu C) val-val-lys Determine the net charge of each peptide at pH 7. From this, in what order will these peptides elute from an anion exchange column at pH 7? options:
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