SCOP 1.73: Superfamily f.4.3: Porins

Lineage for Superfamily f.4.3: Porins

1. Root: SCOP 1.73

2. Class f: Membrane and cell surface proteins and peptides [56835] (50 folds)

3. Fold f.4: Transmembrane beta-barrels [56924] (6 superfamilies)
   not a true fold, gathers together transmembrane barrels of different (n,S)

4. Superfamily f.4.3: Porins [56935] (4 families)

Families:

1. f.4.3.1: Porin [56936] (1 protein)
   trimer, one subunit folds into (16,20) barrel

2. f.4.3.2: Maltoporin-like [56942] (2 proteins)
   trimer, one subunit folds into (18,22) barrel

3. f.4.3.3: Ligand-gated protein channel [56948] (4 proteins)
   monomeric (22,24) barrel; ~150 N-terminal residues form a "plug" or "cork" subdomain

4. f.4.3.4: Outer membrane protein transport protein [111361] (1 protein)
   Pfam PF03349; monomeric (14,16) barrel; plugged by an N-terminal all-alpha subdomain (1-40)

More info for Superfamily f.4.3: Porins

Timeline for Superfamily f.4.3: Porins:

• Superfamily f.4.3: Porins first appeared (with stable ids) in SCOP 1.55
  
• Superfamily f.4.3: Porins appears in SCOP 1.71
  
• Superfamily f.4.3: Porins appears in SCOP 1.75
  
• Superfamily f.4.3: Porins appears in the current release, SCOPe 2.08