General bacterial porin family

Pfam_box
Symbol = Porin_1
Name = Gram-negative porin

General bacterial porins are a family of proteins from the outer membrane of Gram-negative bacteria acts. The porins act as molecular filters for hydrophilic compoundscite journal |author=Benz R, Bauer K |title=Permeation of hydrophilic molecules through theouter membrane of gram-negative bacteria. Review on bacterial porins |journal=Eur. J. Biochem. |volume=176 |issue=1 |pages=1–19 |year=1988 |pmid=2901351 |doi=10.1111/j.1432-1033.1988.tb14245.x] . They are responsible for the 'molecular sieve' properties of the outer membrane. Porins form large water-filled channels which allows the diffusion of hydrophilic molecules into the periplasmic space. Some porins form general diffusion channels that allows any solutes up to a certain size (that size is known as the exclusion limit) to cross the membrane, while other porins are specific for a solute and contain a binding site for that solute inside the pores (these are known as selective porins). As porins are the major outer membrane proteins, they also serve as receptor sites for the binding of phages and bacteriocins.

* Enterobacteria PhoE, OmpC, OmpF, NmpC.
* "Bacteriophage PA-2" LC.
* Neisseria PI.A, PI.B

ubfamilies

*Porin, Neisseria sp. type InterPro|IPR002299

References

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General bacterial porin family

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