Definition: The component of a membrane consisting of the gene products having some covalently attached portion, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, which spans or is embedded in one or both leaflets of the membrane.
Note that proteins intrinsic to membranes cannot be removed without disrupting the membrane, e.g. by detergent.
GO:0044425 - membrane part
GO:0016020 - membrane
predicted flagella assembly protein (flk) ,
Cu+ efflux ATPase (copA) ,
nitrate reductase A, β subunit (narH) ,
nitrate reductase A, α subunit (narG) ,
nitrate reductase A ,
succinate:quinone oxidoreductase ,
cytochrome bd-I terminal oxidase subunit II (cydB) ,
cytochrome bd-I terminal oxidase subunit I (cydA)
Unification Links: GO:0031224
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