Which of the following molecules has a protein kinase receptor?
A) Insulin
B) Estrogen
C) Acetylcholine
D) Sodium
E) G proteins

Question

Quizplus · Accepted Answer

Insulin is known to bind to protein kinase receptors, leading to downstream signaling events. Estrogen binds to estrogen receptors, which are transcription factors, but not protein kinase receptors. Acetylcholine binds to nicotinic and muscarinic receptors, which are G protein-coupled receptors. Sodium is an ion and not a molecule that can bind to receptors. G proteins are also not molecules that bind to protein kinase receptors, but rather play a role in signal transduction pathways downstream of various types of receptors.

Which of the Following Molecules Has a Protein Kinase Receptor