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 hormone results in
a lipid signal released inside the cell to activate 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 proteins.
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Signaling > Problem
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