Structural Classification of Proteins

Superfamily: Acid proteases

: uperfamily

Lineage:

Root: scop
Class: All beta proteins [48724]
Fold: Acid proteases [50629]
barrel, closed; n=6, S=10, complex topology
Superfamily: Acid proteases [50630]
uperfamily

Families:

Retroviral protease (retropepsin) [50631] (8)
dimer of identical mono-domain chains, each containing (6,10) barrel
1. Human immunodeficiency virus type 1 protease [50632]
  1. Human immunodeficiency virus type 1 [TaxId: 11676] [50633] (317)
    SQ P35963 57-155 ! SQ P04587 69-167 ! SQ P03366 69-167 ! SQ P03367 69-167 ! SQ P03368 69-167
2. Human immunodeficiency virus type 2 (HIV-2) protease [50634]
  1. Human immunodeficiency virus type 2 [TaxId: 11709] [50635] (21)
3. Simian immunodeficiency virus (SIV) protease [50636]
  1. Simian immunodeficiency virus, different strains [TaxId: 11723] [50637] (18)
4. Feline immunodeficiency virus (FIV) protease [50638]
  1. Feline immunodeficiency virus [TaxId: 11673] [50639] (7)
5. Rous sarcoma virus protease [50640]
  1. Rous sarcoma virus, strain pr-C [TaxId: 11886] [50641] (2)
6. Myeloblastosis-associated viral protease [50642]
  1. Avian myeloblastosis associated virus [TaxId: 11960] [50643] (1)
7. EIAV protease [50644]
  1. Equine infectious anemia virus [TaxId: 11665] [50645] (2)
8. Mason-Pfizer monkey virus protease [82131]
  1. Simian retrovirus 1, SRV-1 [TaxId: 11942] [82132] (1)
Pepsin-like [50646] (26)
duplication: consists of two similar barrel domains
N-terminal: barrel, partly opened; n*=6, S*=10
1. Endothiapepsin [50647]
  1. Chestnut blight fungus (Endothia parasitica) [TaxId: 5116] [50648] (36)
2. Acid protease [50649]
  1. Fungus (Penicillium janthinellum), penicillopepsin [TaxId: 5079] [50650] (14)
  2. Fungus (Aspergillus phoenicis), aspergillopepsin [TaxId: 5063] [63794] (1)
  3. Fungus (Aspergillus oryzae) [TaxId: 5062] [89352] (2)
  4. Bread mold (Rhizopus chinensis) [TaxId: 4843] [50651] (8)
    SQ P06026 69-393
  5. Rhizomucor miehei [TaxId: 4839] [50652] (2)
  6. Yeast (Candida albicans) [TaxId: 5476] [50653] (2)
  7. Yeast (Candida tropicalis) [TaxId: 5482] [63795] (1)
  8. Baker's yeast (Saccharomyces cerevisiae), proteinase A [TaxId: 4932] [50654] (11)
    synonym: saccharopepsin
  9. Irpex lacteus (Polyporus tulipiferae), Polyporopepsin [TaxId: 5319] [110246] (1)
    SQ P17576 1-329
3. Plant acid proteinase, phytepsin [50655]
  1. Cynara cardunculus [TaxId: 4265] [50656] (1)
  2. Barley (Hordeum vulgare) [TaxId: 4513] [50657] (1)
4. Pepsin(ogen) [50658]
  1. Pig (Sus scrofa) [TaxId: 9823] [50659] (8)
  2. Human (Homo sapiens), isoform 3A [TaxId: 9606] [50660] (4)
  3. Human (Homo sapiens), progastricsin (pepsinogen C) [TaxId: 9606] [50661] (2)
  4. Atlantic cod (Gadus morhua) [TaxId: 8049] [50662] (1)
5. Pepsin [50663]
  1. Mucor pusillus [TaxId: 4840] [50664] (1)
6. Cathepsin D [50665]
  1. Human (Homo sapiens) [TaxId: 9606] [50666] (3)
7. Chymosin (synonym: renin) [50667]
  1. Cow (Bos taurus) [TaxId: 9913] [50668] (4)
  2. Human (Homo sapiens) [TaxId: 9606] [50669] (7)
  3. Mouse (Mus musculus) [TaxId: 10090] [50670] (4)
8. beta-secretase (memapsin) [50671]
  1. Human (Homo sapiens) [TaxId: 9606] [50672] (90)
    SQ P56817 58-446 ! SQ P56817 60-447
9. Plasmepsin (a hemoglobin-degrading enzyme) [50673]
  1. Plasmodium falciparum, plasmepsin II [TaxId: 5833] [50674] (24)
  2. Plasmodium falciparum, plasmepsin IV [TaxId: 5833] [74986] (1)
  3. Plasmodium vivax [TaxId: 5855] [50675] (2)
10. Xylanase inhibitor TAXI-I [110247]
  pepsin-like protein that probably lost the protease activity
  1. Wheat (Triticum aestivum) [TaxId: 4565] [110248] (3)
    SQ Q8H0K8 22-402
LPG0085-like [159190] (1)
Pfam 05618; DUF785; single-domain protein similar to one pepsin domain with the conserved catalytic Asp motif (not in a few archaeal members of this Pfam family)
1. Uncharacterized protein LPG0085 [159191]
  1. Legionella pneumophila [TaxId: 446] [159192] (2)
    SQ Q5ZZC6 26-166