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Which one of the following peptide sequences is most likely to be phosphorylated?

a Pro-Gly-Cys-Trp-His-Phe b Ser-Thr-Tyr-Arg-Lys-Glu c Gly-Ala-Val-Leu-Ile-Met d Asp-Glu-Gln-Asn-Cys-Gly e Leu-Ile-Val-Met-Phe-Trp

The peptide sequence Ser-Thr-Tyr-Arg-Lys-Glu is most likely to be phosphorylated because it contains serine (Ser), threonine (Thr), and tyrosine (Tyr) residues, which are the primary amino acids targeted by kinases for phosphorylation.

Cell Biology Proteins

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