7QE8 | pdb_00007qe8

Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 (SPINK1)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Trypsin-like serine proteases	8042115	3000114	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Trypsin-like serine proteases	8042115	3000114	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Kazal-type serine protease inhibitors	8038688	3000605	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Kazal-type serine protease inhibitors	8038688	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	Trypsin_1	e7qe8A1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
B	Trypsin_1	e7qe8B1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
D	Kazal_1	e7qe8D1	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	ECOD (1.6)
C	Kazal_1	e7qe8C1	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	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (utative)
B	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00089	Trypsin (Trypsin)	Trypsin		Domain
C, D	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 ...	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 containing three disulphides. Alignment also includes a single domain from transporters in the OATP/PGT family Swiss:P46721.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Trypsin-1	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity cation binding ion binding binding metal ion binding small molecule binding	cellular component organization cellular component disassembly extracellular matrix disassembly extracellular matrix organization cellular process cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process multicellular organismal process cellular component organization cellular component disassembly extracellular matrix disassembly extracellular matrix organization cellular process cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process multicellular organismal process digestion	cellular anatomical structure extracellular region extracellular space blood microparticle
C, D	Serine protease inhibitor Kazal-type 1	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity serine-type endopeptidase inhibitor activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity	regulation of store-operated calcium entry regulation of calcium ion transport regulation of localization regulation of biological process transport regulation of transport regulation of monoatomic ion transport biological regulation establishment of localization calcium ion transport metal ion transport localization store-operated calcium entry monoatomic ion transport regulation of store-operated calcium entry regulation of calcium ion transport regulation of localization regulation of biological process transport regulation of transport regulation of monoatomic ion transport biological regulation establishment of localization calcium ion transport metal ion transport localization store-operated calcium entry monoatomic ion transport monoatomic cation transport regulation of metal ion transport developmental process spermatid development spermatid differentiation sexual reproduction cellular developmental process spermatogenesis reproductive process multicellular organismal reproductive process cell development cellular process involved in reproduction in multicellular organism developmental maturation developmental process involved in reproduction gamete generation male gamete generation sperm capacitation anatomical structure maturation cell differentiation anatomical structure development germ cell development cellular process cell maturation regulation of calcium ion import negative regulation of monoatomic ion transport negative regulation of biological process negative regulation of transport negative regulation of calcium ion import negative regulation of calcium ion transport calcium ion import regulation of reproductive process acrosome reaction fertilization regulation of acrosome reaction single fertilization cellular response to stimulus nitric oxide mediated signal transduction regulation of cellular process response to stimulus signaling intracellular signal transduction cell communication intracellular signaling cassette signal transduction negative regulation of signaling negative regulation of intracellular signal transduction regulation of signal transduction negative regulation of cell communication regulation of intracellular signal transduction negative regulation of cellular process regulation of signaling regulation of nitric oxide mediated signal transduction negative regulation of response to stimulus negative regulation of signal transduction regulation of response to stimulus regulation of cell communication negative regulation of nitric oxide mediated signal transduction	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, B	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
A, B	IPR001254	Serine proteases, trypsin domain	Domain
A, B	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A, B	IPR050127	Serine Proteases (Peptidase S1 Family)	Family
A, B	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
C, D	IPR036058	Kazal domain superfamily	Homologous Superfamily
C, D	IPR002350	Kazal domain	Domain
C, D	IPR001239	Proteinase inhibitor I1, Kazal-type, metazoa	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P07477	pancreatitis hereditary chronic pancreatitis trypsinogen deficiency chronic pancreatitis alcoholic pancreatitis colorectal cancer pancreatic intraductal papillary-mucinous carcinoma PANCREATITIS, CHRONIC, SUSCEPTIBILITY TO cystic fibrosis pancreatic intraductal papillary-mucinous neoplasm ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia
C, D	Pharos: P00995	pancreatitis tropical pancreatitis hereditary chronic pancreatitis chronic pancreatitis prostate cancer PANCREATITIS, CHRONIC, PROTECTION AGAINST alcoholic pancreatitis cystic fibrosis malignant colon neoplasm non-small cell lung carcinoma psoriasis tuberculosis Crohn disease esophageal adenocarcinoma interstitial cystitis pancreatitis tropical pancreatitis hereditary chronic pancreatitis chronic pancreatitis prostate cancer PANCREATITIS, CHRONIC, PROTECTION AGAINST alcoholic pancreatitis cystic fibrosis malignant colon neoplasm non-small cell lung carcinoma psoriasis tuberculosis Crohn disease esophageal adenocarcinoma interstitial cystitis pancreatic intraductal papillary-mucinous neoplasm spina bifida ulcerative colitis Barrett esophagus cutaneous lupus erythematosus lung adenocarcinoma malignant pancreatic neoplasm pancreatic neoplasm

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.