OMPF PORINOMPF PORIN

Structural highlights

2omf is a 1 chain structure with sequence from Escherichia coli k12. This structure supersedes the now removed PDB entry 1omf. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[OMPF_ECOLI] Forms pores that allow passive diffusion of small molecules across the outer membrane. It is also a receptor for the bacteriophage T2.[1]

Evolutionary Conservation

 

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Porins form aqueous channels that aid the diffusion of small hydrophilic molecules across the outer membrane of Gram-negative bacteria. The crystal structures of matrix porin and phosphoporin both reveal trimers of identical subunits, each subunit consisting of a 16-stranded anti-parallel beta-barrel containing a pore. A long loop inside the barrel contributes to a constriction of the channel where the charge distribution affects ion selectivity. The structures explain at the molecular level functional characteristics and their alterations by known mutations.

Crystal structures explain functional properties of two E. coli porins.,Cowan SW, Schirmer T, Rummel G, Steiert M, Ghosh R, Pauptit RA, Jansonius JN, Rosenbusch JP Nature. 1992 Aug 27;358(6389):727-33. PMID:1380671[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. Duval V, Nicoloff H, Levy SB. Combined inactivation of lon and ycgE decreases multidrug susceptibility by reducing the amount of OmpF porin in Escherichia coli. Antimicrob Agents Chemother. 2009 Nov;53(11):4944-8. doi: 10.1128/AAC.00787-09., Epub 2009 Aug 31. PMID:19721064 doi:10.1128/AAC.00787-09
  2. Cowan SW, Schirmer T, Rummel G, Steiert M, Ghosh R, Pauptit RA, Jansonius JN, Rosenbusch JP. Crystal structures explain functional properties of two E. coli porins. Nature. 1992 Aug 27;358(6389):727-33. PMID:1380671 doi:http://dx.doi.org/10.1038/358727a0

2omf, resolution 2.40Å

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