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18 Cards in this Set
- Front
- Back
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A regulatory molecule that binds to a site other than the active site and inhibits enzyme activity is referred to as:
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an allosteric inhibitor
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Phosphorylation of a regulatory enzyme in glycolysis is an example of:
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Covalent modification
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A change in the concentration of an enzyme is referred to as:
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Transcriptional regulation or protein turnover
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Protein degradation is achieved through an amino acid modification of lysine. What amino acid modification is required for protein degradation?
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ubiquitin
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The enzyme responsible for the phosphorylation of an enzyme is:
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protein kinase
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An enzyme responsible for the removal of phosphate group from a regulated enzyme is referred to as:
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a protein phosphatase
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An inactive protein is referred to as:
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a zymogen
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Which amino acids can by glycosylated?
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Ser, Thr, Tyr, & Asn
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Which amino acids can by phosphorylated?
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Ser, Thr, Tyr
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Which amino acid is responsible for the formation of disulfide bonds?
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Cys
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List examples of amino acid modification?
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Biotinylation
Glycation Hydroxylation Carboxylation Prenylation (myristyl, farnesyl, gerany-geranyl) Cleavage Isomerization GPI anchor ADP-Ribosylation Glycosylation Phosphorylation Acetylation Ubiquitination Sumoylation Methylation Oxidation Sulfation Amidation |
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Chymotrypsinogen is activated by:
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Trypsin
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The process of controlling enzyme concentration is achieved by:
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Transcriptional control and protein degradation
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(T or F) Transcription is defined as the process of DNA -> RNA.
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True
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(T or F) Transcriptional regulation is achieved through activity of transcription factors.
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True
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(T or F) Regulatory enzymes are often found at reversible steps within a pathway.
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False
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(T or F) Feedback inhibition is an example of products inhibiting upstream steps in the chemical pathway.
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True
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(T or F) Feed-Forward activation is an example of allosteric regulation.
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True
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