Intrinsic protein

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Definition

noun, plural: intrinsic proteins

Any of the group of integral membrane proteins that facilitate specific transport of water molecules (e.g. by aquaporins), and of neutral solutes (e.g. glycerol by glycerol facilitators).


Supplement

Examples of intrinsic proteins are:


Word origin: ML intrinsecus inward (adjective), L (adverb), equiv. to intrin- (int(e)r-.

Synonym: integral membrane protein (IMP).
Compare: extrinsic protein.
See also: cell membrane, fluid mosaic model.