What determines the specificity of a receptor protein?
A)the cytoplasmic domain
B)the transmembrane domain
C)the ligand-binding site
D)the extracellular domain

Question

Quizplus · Accepted Answer

The specificity of a receptor protein is determined by the ligand-binding site, which is the region on the extracellular domain of the receptor protein that specifically recognizes and binds to a particular ligand or chemical messenger. The other domains (cytoplasmic and transmembrane) are important for signal transduction and downstream cellular responses, but they do not determine the specificity of the receptor.

What Determines the Specificity of a Receptor Protein