3QTL
Structural Basis for Dual-inhibition Mechanism of a Non-classical Kazal-type Serine Protease Inhibitor from Horseshoe Crab in Complex with Subtilisin
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | d3qtla_ | Alpha and beta proteins (a/b) | Subtilisin-like | Subtilisin-like | Subtilases | automated matches | (Bacillus licheniformis ) [TaxId: 1402 ], | SCOPe (2.08) |
B | d3qtlb_ | Alpha and beta proteins (a/b) | Subtilisin-like | Subtilisin-like | Subtilases | automated matches | (Bacillus licheniformis ) [TaxId: 1402 ], | SCOPe (2.08) |
C | d3qtlc_ | Alpha and beta proteins (a/b) | Subtilisin-like | Subtilisin-like | Subtilases | automated matches | (Bacillus licheniformis ) [TaxId: 1402 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
A | SCOP2B Superfamily | Subtilisin-like | 8099834 | 3000226 | SCOP2B (2022-06-29) |
B | SCOP2 Family | Subtilases | 8099833 | 4000409 | SCOP2 (2022-06-29) |
B | SCOP2 Superfamily | Subtilisin-like | 8099834 | 3000226 | SCOP2 (2022-06-29) |
C | SCOP2B Superfamily | Subtilisin-like | 8099834 | 3000226 | SCOP2B (2022-06-29) |
D | SCOP2B Superfamily | Kazal-type serine protease inhibitors | 8070137 | 3000605 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | Peptidase_S8 | e3qtlA1 | A: a/b three-layered sandwiches | X: Subtilisin-like | H: Subtilisin-like (From Topology) | T: Subtilisin-like | F: Peptidase_S8 | ECOD (1.6) |
B | Peptidase_S8 | e3qtlB1 | A: a/b three-layered sandwiches | X: Subtilisin-like | H: Subtilisin-like (From Topology) | T: Subtilisin-like | F: Peptidase_S8 | ECOD (1.6) |
C | Peptidase_S8 | e3qtlC1 | A: a/b three-layered sandwiches | X: Subtilisin-like | H: Subtilisin-like (From Topology) | T: Subtilisin-like | F: Peptidase_S8 | ECOD (1.6) |
D | Kazal_1_1 | e3qtlD1 | A: few secondary structure elements | X: Kazal-type serine protease inhibitors-like | H: Kazal-type serine protease inhibitors (From Topology) | T: Kazal-type serine protease inhibitors | F: Kazal_1_1 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 3.40.50.200 | Alpha Beta | 3-Layer(aba) Sandwich | Rossmann fold | Peptidase S8/S53 domain | CATH (4.3.0) |
B | 3.40.50.200 | Alpha Beta | 3-Layer(aba) Sandwich | Rossmann fold | Peptidase S8/S53 domain | CATH (4.3.0) |
C | 3.40.50.200 | Alpha Beta | 3-Layer(aba) Sandwich | Rossmann fold | Peptidase S8/S53 domain | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF00082 | Subtilase family (Peptidase_S8) | Subtilase family | Subtilases are a family of serine proteases. They appear to have independently and convergently evolved an Asp/Ser/His catalytic triad, like that found in the trypsin serine proteases (see Pfam:PF00089). Structure is an alpha/beta fold containing a 7 ... | Domain | |
PF00050 | Kazal-type serine protease inhibitor domain (Kazal_1) | Kazal-type serine protease inhibitor domain | Usually indicative of serine protease inhibitors. However, kazal-like domains are also seen in the extracellular part of agrins, which are not known to be protease inhibitors. Kazal domains often occur in tandem arrays. Small alpha+beta fold containi ... | Domain | |
PF07648 | Kazal-type serine protease inhibitor domain (Kazal_2) | Kazal-type serine protease inhibitor domain | Usually indicative of serine protease inhibitors. However, kazal-like domains are also seen in the extracellular part of agrins, which are not known to be protease inhibitors. Kazal domains often occur in tandem arrays. Small alpha+beta fold containi ... | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
---|---|---|---|---|
Subtilisin-like serin protease | ||||
Kazal-type serine protease inhibitor SPI-1 | - | - | - |
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR023828 | Peptidase S8, subtilisin, Ser-active site | Active Site | |
IPR010259 | Peptidase S8 propeptide/proteinase inhibitor I9 | Domain | |
IPR022398 | Peptidase S8, subtilisin, His-active site | Active Site | |
IPR000209 | Peptidase S8/S53 domain | Domain | |
IPR015500 | Peptidase S8, subtilisin-related | Family | |
IPR036852 | Peptidase S8/S53 domain superfamily | Homologous Superfamily | |
IPR023827 | Peptidase S8, subtilisin, Asp-active site | Active Site | |
IPR050131 | Subtilisin-like serine protease | Family | |
IPR037045 | Peptidase S8 propeptide/proteinase inhibitor I9 superfamily | Homologous Superfamily | |
IPR034202 | Subtilisin Carlsberg-like catalytic domain | Domain | |
IPR050159 | Kazal-type Serine Protease Inhibitor | Family | |
IPR036058 | Kazal domain superfamily | Homologous Superfamily | |
IPR002350 | Kazal domain | Domain |