Biochem ACS Review Test Questions and Answers Top Graded 2024
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Course
Biochem ACS
Institution
Biochem ACS
What amino acids have nonpolar, aliphatic R groups? - Glycine, Alanine, Proline, Valine, Leucine, Isoleucine, Methionine
What amino acids have polar, uncharged R groups? - Serine, Threonine, Cysteine, Asparagine, and Glutamine
What amino acids have aromatic R groups? - Phenylalanine, Tyrosine...
Biochem ACS Review Test Questions and
Answers Top Graded 2024
bestzone
BIOCHEM ACS
8/29/24
, Biochem ACS Review Test
What amino acids have nonpolar, aliphatic R groups? - Glycine, Alanine, Proline,
Valine, Leucine, Isoleucine, Methionine
What amino acids have polar, uncharged R groups? - Serine, Threonine, Cysteine,
Asparagine, and Glutamine
What amino acids have aromatic R groups? - Phenylalanine, Tyrosine, and Tryptophan
What amino acids have negatively charged R groups? - Aspartate and Glutamate
What amino acids have positively charged R groups? - Lysine, Arginine, and Histidine
What is isoelectric focusing? - Proteins are electrophoresed in a pH gradient gel. Each
protein will move in the gel as long as the protein contains a charge
What does SDS do? - It binds to proteins and denatures it. All proteins have same
mass/ charge ratio
How do you determine the Amino Terminus? - 1. Make a derivative of the N-terminus
with a marker molecule
2. Hydrolyze the peptide
3. N-terminal AA is identified by chromatography- modified amino acid will elute
differently than unmodified AA
What molecule does Edman Degradation use? - Phenyl Isothiocyanate (PTH)
What does Edman Degradation do? - It removes one amino acid at a time. The limit is
50 amino acids. After 50 amino acids, the polypeptide must be hydrolyzed into smaller
fractions
Biochem ACS Review Test
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