You have identified a novel cytoplasmic protein.Through sequence analysis you are able to identify the presence of a number of serine/threonine phosphorylation motifs.Based on these data,you hypothesize that this protein may be a substrate for what kind of enzyme?

Question

Quizplus · Accepted Answer

The presence of serine/threonine phosphorylation motifs suggests that the protein may be phosphorylated by a protein kinase, which typically phosphorylates these amino acids. Receptor tyrosine kinases and tyrosine phosphatases typically phosphorylate/dephosphorylate tyrosine residues, whereas G protein-coupled receptors and phospholipases do not directly participate in protein phosphorylation.

You Have Identified a Novel Cytoplasmic Protein