The Biology Project
Cell Signaling > Problem
A protein receptor binds a hormone outside the cell membrane and activates
a protein kinase inside the cell. Is the receptor a peripheral or integral
||Membrane receptors are peripheral, or associated with
the surface of the bilayer. Association with a hormone results in
the release of a lipid signal that activates protein kinases.
Membrane receptors associated with signaling
are all integral membrane proteins that can transmit signals through
the lipid bilayer.
Yes, membrane proteins that function
as receptors for cell signaling must penetrate the cell
membrane. Since the polypeptide passes through the lipid
bilayer, the protein-receptors are all integral membrane
Project > Cell
Biology > Cell
Signaling > Problem
All contents copyright © 2002-04. All rights reserved.