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outer membrane beta-barrel protein
This domain is found in a wide range of outer membrane proteins. This domain assumes a membrane bound beta-barrel fold. (from Pfam)
OmpA family protein
This domain represents the presumed membrane spanning region of the OprF proteins. This region is involved in channel formation and is thought to form an 8-stranded beta-barrel [3]. [1]. 7521711. Molecular characterization of the major outer-membrane protein OprF from plant root-colonizing Pseudomonas fluorescens. De Mot R, Schoofs G, Roelandt A, Declerck P, Proost P, Van Damme J, Vanderleyden J;. Microbiology 1994;140:1377-1387. [2]. 11118535. Involvement of the C-terminal part of Pseudomonas fluorescens OprF in the modulation of its pore-forming properties. El Hamel C, Freulet MA, Jaquinod M, De E, Molle G, Orange N;. Biochim Biophys Acta 2000;1509:237-244. [3]. 11034289. Ion channel formation by N-terminal domain: a common feature of OprFs of Pseudomonas and OmpA of Escherichia coli. Saint N, El Hamel C, De E, Molle G;. FEMS Microbiol Lett 2000;190:261-265. (from Pfam)
The Pfam entry also includes MotB and related proteins which are not included in the Prosite family. (from Pfam)
OmpA family membrane protein acts as a porin with low permeability that allows slow penetration of small solutes; may function in peptidoglycan binding
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