Structural Classification of Proteins

Superfamily: Porins

: uperfamily

Lineage:

Root: scop
Class: Membrane and cell surface proteins and peptides [56835]
Does not include proteins in the immune system
Fold: Transmembrane beta-barrels [56924]
not a true fold, gathers together transmembrane barrels of different (n,S)
Superfamily: Porins [56935]
uperfamily

Families:

Porin [56936] (5)
trimer, one subunit folds into (16,20) barrel
1. Porin [56937]
  1. Escherichia coli, different sequences [TaxId: 562] [56938] (21)
  2. Rhodobacter capsulatus [TaxId: 1061] [56939] (2)
  3. Rhodopseudomonas blastica, strain DSM2131 [TaxId: 1075] [56940] (9)
  4. Klebsiella pneumoniae [TaxId: 573] [56941] (1)
  5. Comamonas acidovorans [TaxId: 80866] [64534] (3)
    Anion-selective porin OMP32
Maltoporin-like [56942] (3)
trimer, one subunit folds into (18,22) barrel
1. Maltoporin (also LamB protein) [56943]
  1. Escherichia coli [TaxId: 562] [56944] (8)
  2. Salmonella typhimurium [TaxId: 90371] [56945] (2)
2. Sucrose-specific porin [56946]
  1. Enterobacterium (Salmonella typhimurium) [TaxId: 90371] [56947] (3)
Ligand-gated protein channel [56948] (4)
monomeric (22,24) barrel; ~150 N-terminal residues form a "plug" or "cork" subdomain
1. Ferric hydroxamate uptake receptor FhuA [56949]
  1. Escherichia coli [TaxId: 562] [56950] (11)
2. Ferric enterobactin receptor FepA [56951]
  1. Escherichia coli [TaxId: 562] [56952] (1)
3. Outer membrane transporter FecA [75654]
  1. Escherichia coli [TaxId: 562] [75655] (5)
4. Outer membrane cobalamin transporter BtuB [90129]
  vitamin B12 receptor
  1. Escherichia coli [TaxId: 562] [90130] (8)
Outer membrane protein transport protein [111361] (1)
Pfam 03349; monomeric (14,16) barrel; plugged by an N-terminal all-alpha subdomain (1-40)
1. Long-chain fatty acid transport protein FadL [111362]
  1. Escherichia coli [TaxId: 562] [111363] (2)
    SQ P10384