Question

Protein kinases and phosphatases act by altering ______________ of the signaling proteins.

(a) basicity

(b) conformation

(c) acidity

(d) size

I have been asked this question by my school principal while I was bunking the class.

My enquiry is from Cell Signaling Systems in chapter Cell Signaling and Signal Transduction of Cell Biology

Answer 1

The correct answer is (b) conformation

To explain: Protein kinases are enzymes that add phosphate groups while protein phosphatases remove phosphate groups. These enzymes alter the conformation of signaling proteins.