7QE8

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

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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)
C	SCOP2B Superfamily	Kazal-type serine protease inhibitors	8038688	3000605	SCOP2B (2022-06-29)
D	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	PF00089	e7qe8A1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: PF00089	ECOD (1.6)
B	PF00089	e7qe8B1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: PF00089	ECOD (1.6)
C	PF00050	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: PF00050	ECOD (1.6)
D	PF00050	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: PF00050	ECOD (1.6)

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 organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic 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 organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process multicellular organismal process digestion	extracellular region extracellular space cellular anatomical entity blood microparticle cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix
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	positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality 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 establishment of localization calcium ion transport metal ion transport localization positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality 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 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 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 multicellular organismal process regulation of body fluid levels system process digestive system process regulation of system process positive regulation of biological process positive regulation of secretion positive regulation of digestive system process positive regulation of pancreatic juice secretion regulation of multicellular organismal process secretion by tissue pancreatic juice secretion secretion regulation of pancreatic juice secretion regulation of digestive system process regulation of secretion body fluid secretion digestion positive regulation of transport positive regulation of multicellular organismal process cellular response to nitrogen compound response to organic substance response to endogenous stimulus response to organonitrogen compound response to peptide hormone cellular response to peptide hormone stimulus response to oxygen-containing compound response to nitrogen compound cellular response to oxygen-containing compound cellular response to endogenous stimulus cellular response to chemical stimulus cellular response to organonitrogen compound response to hormone response to chemical cellular response to organic substance cellular response to hormone stimulus response to nutrient levels cell population proliferation positive regulation of cell population proliferation positive regulation of epithelial cell proliferation regulation of cell population proliferation regulation of epithelial cell proliferation epithelial cell proliferation positive regulation of cellular process regulation of reproductive process acrosome reaction fertilization regulation of acrosome reaction single fertilization regulation of protein modification process regulation of protein phosphorylation negative regulation of phosphate metabolic process peptidyl-tyrosine modification negative regulation of cellular metabolic process regulation of primary metabolic process organic substance metabolic process regulation of phosphate metabolic process peptidyl-amino acid modification phosphate-containing compound metabolic process negative regulation of protein modification process protein metabolic process protein modification process phosphorus metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of peptidyl-tyrosine phosphorylation organonitrogen compound metabolic process protein phosphorylation phosphorylation cellular metabolic process regulation of protein metabolic process negative regulation of metabolic process regulation of peptidyl-tyrosine phosphorylation primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process negative regulation of protein phosphorylation macromolecule modification negative regulation of phosphorus metabolic process metabolic process regulation of phosphorylation regulation of phosphorus metabolic process macromolecule metabolic process negative regulation of phosphorylation peptidyl-tyrosine phosphorylation regulation of metabolic process positive regulation of cell communication nitrogen compound transport regulation of hormone secretion regulation of peptide secretion positive regulation of secretion by cell hormone secretion peptide secretion secretion by cell regulation of secretion by cell positive regulation of hormone secretion amide transport signal release regulation of peptide hormone secretion positive regulation of peptide secretion regulation of hormone levels positive regulation of peptide hormone secretion organic substance transport regulation of peptide transport cell-cell signaling export from cell peptide transport peptide hormone secretion hormone transport positive regulation of signaling response to alcohol response to ethanol	extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity 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	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
C, D	IPR036058	Kazal domain superfamily	Homologous Superfamily
C, D	IPR001239	Proteinase inhibitor I1, Kazal-type, metazoa	Family
C, D	IPR002350	Kazal domain	Domain

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 R01GM133198.