integral membrane protein


integral membrane protein
A protein that is firmly anchored in a membrane (unlike a peripheral membrane protein). Most is known about the integral proteins of the plasma membrane, where important examples include hormone receptors, ion channels, and transport proteins. An integral protein need not cross the entire membrane; those that do are referred to as transmembrane proteins.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

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  • Peripheral membrane protein — Peripheral membrane proteins are proteins that adhere only temporarily to the biological membrane with which they are associated. These molecules attach to integral membrane proteins, or penetrate the peripheral regions of the lipid bilayer. The… …   Wikipedia

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  • Membrane topology — In biochemistry, the membrane topology of an transmembrane protein describes which portions of the amino acid sequence of the protein lie within the plane of the surrounding lipid bilayer and which portions protrude into the watery environment on …   Wikipedia


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