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Protein kinases transfer phosphate groups to the side chains of which of the following?

Protein kinases transfer phosphate groups to the side chains of which of the following? Correct Answer Serine

Protein phosphorylation is catalyzed by protein kinases, most of which transfer phosphate groups from ATP to the hydroxyl groups of the side chains of serine, threonine or tyrosine residues. The protein kinases are one of the largest protein families in eukaryotes, accounting for approximately 2% of eukaryotic genes.

Related Questions

To which of the following residues of the protein, the protein kinases do not add phosphate groups?
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Conclusions :
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