1.B.67 The Putative Beta Barrel Porin-4 (BBP4) Family

The BBP4 family consists of proteins retrieved with a single BLAST search with a single iteration using query protein 1.B.67.1.1.  These proteins show similarity with many proteins in TC subclass 1.B.  In fact, this family is a member of the large beta barrel porin superfamily.  Most of them have N-terminal leader sequences that probably target them to the Sec translocon for export across the cytoplasmic membrane.  There seems to be no functionally characterized member of this family as of 8/2013.



This family belongs to the Outer Membrane Pore-forming Protein (OMPP) Superfamily I.

Examples:

TC#NameOrganismal TypeExample
1.B.67.1.1

Putative porin

Ignavibacteria

Porin of Melloribacter roseus

 
1.B.67.1.2

Putative outer membrane channel superfamily member

Proteobacteria

Putative porin of Rhodanobacter sp.

 
1.B.67.1.3

Putative porin

Thermodesulfobacteria

Putative porin of Thermodesulfobacterium geofontis

 
1.B.67.1.4

Putative porin

Proteobacteria

Putative porin of Melioribacter roseus

 
1.B.67.1.5

Putative porin

Ignavibacteriae

Putative porin of Ignavibacterium album

 
1.B.67.1.6

Putative porin

Proteobacteria

Putative porin of Anaeromyxobacter dehalogans

 
1.B.67.1.7

Putative holin

Aquificae

Putative porin of Sulfurihydrogenibium azorense