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AP Biology/Unit 1: Chemistry of Life
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Directionality of Post-Translational Modification
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Which of the following post-translational modifications is most directly dependent on the directional nature of polypeptide synthesis?

A

Sequential glycosylation of specific residues in the endoplasmic reticulum

B

Uniform methylation of all lysine residues

C

Random phosphorylation of serine residues throughout the protein

D

Oxidation of surface-exposed methionine residues

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