Corynebacterial porin B

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]

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