Question

How might a protein kinase select the correct residues

tophosphorylate given the availability of serine and
threonineresidues on the surface of globular proteins?

Answer 1

The flanking residues facilitate recognition and specificity.

Step-by-step explanation:

The kinase is able to to specifically phosphorylate serine and threonine due to the recognition of the flanking residues. Altogether, these form a consensus sequence across the substrate.