1F34
CRYSTAL STRUCTURE OF ASCARIS PEPSIN INHIBITOR-3 BOUND TO PORCINE PEPSIN
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | d1f34a_ | All beta proteins | Acid proteases | Acid proteases | Pepsin-like | Pepsin(ogen) | (Sus scrofa ) [TaxId: 9823 ], | SCOPe (2.08) |
B | d1f34b_ | Alpha and beta proteins (a+b) | Pepsin inhibitor-3 | Pepsin inhibitor-3 | Pepsin inhibitor-3 | Pepsin inhibitor-3 | pig roundworm (Ascaris suum ) [TaxId: 6253 ], | SCOPe (2.08) |
Domain Annotation: ECOD Classification ECOD Database Homepage
Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | Asp_C | e1f34A2 | A: beta barrels | X: cradle loop barrel | H: RIFT-related | T: acid protease | F: Asp_C | ECOD (1.6) |
A | Asp_N | e1f34A3 | A: beta barrels | X: cradle loop barrel | H: RIFT-related | T: acid protease | F: Asp_N | ECOD (1.6) |
B | Pepsin-I3 | e1f34B1 | A: a+b duplicates or obligate multimers | X: Pepsin inhibitor-3 (From Topology) | H: Pepsin inhibitor-3 (From Topology) | T: Pepsin inhibitor-3 | F: Pepsin-I3 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 2.40.70.10 | Mainly Beta | Beta Barrel | Cathepsin D, subunit A | domain 1 | CATH (4.3.0) |
B | 3.30.1120.50 | Alpha Beta | 2-Layer Sandwich | Arylsulfatase, C-terminal domain | Pepsin inhibitor-3 | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF00026 | Eukaryotic aspartyl protease (Asp) | Eukaryotic aspartyl protease | Aspartyl (acid) proteases include pepsins, cathepsins, and renins. Two-domain structure, probably arising from ancestral duplication. This family does not include the retroviral nor retrotransposon proteases (Pfam:PF00077), which are much smaller a ... | Domain | |
PF06394 | Pepsin inhibitor-3-like repeated domain (Pepsin-I3) | Pepsin inhibitor-3-like repeated domain | Pepsin inhibitor-3 consisting of two domains, each comprising an antiparallel beta-sheet flanked by an alpha-helix. In the enzyme-inhibitor complex, the N-terminal beta-strand of PI-3 pairs with one strand of the active site flap region of pepsin ... | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
---|---|---|---|---|
PEPSIN A | ||||
MAJOR PEPSIN INHIBITOR PI-3 | - |
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR001461 | Aspartic peptidase A1 | Family | |
IPR012848 | Aspartic peptidase, N-terminal | Domain | |
IPR034162 | Pepsin catalytic domain | Domain | |
IPR033121 | Peptidase family A1 domain | Domain | |
IPR021109 | Aspartic peptidase domain superfamily | Homologous Superfamily | |
IPR001969 | Aspartic peptidase, active site | Active Site | |
IPR010480 | Pepsin inhibitor-3-like repeated domain | Domain | |
IPR051901 | Protease Inhibitor I33 | Family | |
IPR038412 | Pepsin inhibitor-3 domain superfamily | Homologous Superfamily |