Multiple Choice
Hydrolysis of GTP to GDP causes what to occur to a GTP-Binding protein
6. Proteins
Protein Regulation
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Which of the following is not a protein modification that allows for protein regulation?
A
Ubiquitination
B
Phosphorylation
C
Glycosylation
D
Noncovalent interactions in the binding site
Verified step by step guidance1
Understand that protein modifications are chemical changes to a protein that can affect its function, activity, or location.
Recognize that ubiquitination, phosphorylation, and glycosylation are all covalent modifications that involve the addition of a chemical group to a protein.
Ubiquitination involves the attachment of ubiquitin molecules to a protein, often marking it for degradation.
Phosphorylation involves the addition of a phosphate group, typically altering the protein's activity or function.
Glycosylation involves the addition of sugar molecules, which can affect protein folding, stability, and cell signaling. Noncovalent interactions, however, do not involve covalent bonds and are not considered a modification.
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