Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
A [auth E]SCOP2B SuperfamilyTrypsin-like serine proteases 8037496 3000114 SCOP2B (2022-06-29)
B [auth I]SCOP2B SuperfamilyBPTI-like 8038485 3000628 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth E]Trypsin_1e4y0zE1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: FMN-binding split barrel 2F: Trypsin_1ECOD (1.6)
B [auth I]Kunitz_BPTIe4y0zI1 A: few secondary structure elementsX: BPTI-like (From Topology)H: BPTI-like (From Topology)T: BPTI-likeF: Kunitz_BPTIECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A [auth E]2.40.10.10 Mainly Beta Beta Barrel Thrombin, subunit H Trypsin-like serine proteasesCATH (4.3.0)
B [auth I]4.10.410.10 Few Secondary Structures Irregular Factor Xa Inhibitor Pancreatic trypsin inhibitor Kunitz domainCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A [auth E]PF00089Trypsin (Trypsin)Trypsin- Domain
B [auth I]PF00014Kunitz/Bovine pancreatic trypsin inhibitor domain (Kunitz_BPTI)Kunitz/Bovine pancreatic trypsin inhibitor domainIndicative of a protease inhibitor, usually a serine protease inhibitor. Structure is a disulfide rich alpha+beta fold. BPTI (bovine pancreatic trypsin inhibitor) is an extensively studied model structure. Certain family members are similar to the ...Indicative of a protease inhibitor, usually a serine protease inhibitor. Structure is a disulfide rich alpha+beta fold. BPTI (bovine pancreatic trypsin inhibitor) is an extensively studied model structure. Certain family members are similar to the tick anticoagulant peptide (TAP, Swiss:P17726). This is a highly selective inhibitor of factor Xa in the blood coagulation pathways [1]. TAP molecules are highly dipolar [2], and are arranged to form a twisted two- stranded antiparallel beta-sheet followed by an alpha helix [1].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth E]Cationic trypsin
B [auth I]Pancreatic trypsin inhibitor

Protein Modification Annotation

Modified Residue(s)
ChainResidue(s)Description
B [auth I]ABA Parent Component: ALA

RESIDAA0253 , AA0409

PSI-MOD :  S-(2-aminovinyl)-3-methyl-D-cysteine MOD:00258 , L-2-aminobutanoic acid (Glu) MOD:00819