Porin PorB/PorC (IPR021114)

Short name: Porin_PorB/PorC

Overlapping homologous superfamilies


Family relationships



This entry represents the putative cell wall channel-forming proteins porin B and porin C from Corynebacterium sp. 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 disulphide bridge between helices 1 and 4 to form a stable covalently bound ring [PMID: 18462756]. The channel of PorB is oligomeric [PMID: 18462756].

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.