Corynebacterial porin B

Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

PorB
Identifiers
Symbol	PorB
Pfam	PF11565
InterPro	IPR021114
TCDB	1.B.34
OPM superfamily	190
OPM protein	2vql
Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

Porins B and C are cell wall channel-forming proteins from Corynebacterium. Porin B from Corynebacterium glutamicum (Brevibacterium flavum) allows the exchange of material across the mycolic acid layer, which is the protective nonpolar barrier. Porin B has an alpha helical core structure consisting of four alpha-helices surrounding a nonpolar interior. There is a disulfide bridge between helices 1 and 4 to form a stable covalently bound ring.[1] The channel of PorB is oligomeric.[1]

References

Ziegler K, Benz R, Schulz GE (June 2008). "A putative alpha-helical porin from Corynebacterium glutamicum". J. Mol. Biol. 379 (3): 482–91. doi:10.1016/j.jmb.2008.04.017. PMID 18462756.

This article incorporates text from the public domain Pfam and InterPro: IPR021114

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[pmid18462756-1] Ziegler K, Benz R, Schulz GE (June 2008). "A putative alpha-helical porin from Corynebacterium glutamicum". J. Mol. Biol. 379 (3): 482–91. doi:10.1016/j.jmb.2008.04.017. PMID 18462756.