4KEL | pdb_00004kel

Atomic resolution crystal structure of Kallikrein-Related Peptidase 4 complexed with a modified SFTI inhibitor FCQR(N)

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	8103731	3000114	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	Aldo_ket_red	e4kelA1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: Aldo_ket_red	ECOD (v294.1)

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 (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00089	Trypsin (Trypsin)	Trypsin		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Trypsin inhibitor 1	protein binding binding enzyme binding protease binding 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	-	-
A	Kallikrein-4	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	developmental process anatomical structure morphogenesis odontogenesis of dentin-containing tooth anatomical structure formation involved in morphogenesis anatomical structure development odontogenesis animal organ development amelogenesis animal organ morphogenesis biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process developmental process anatomical structure morphogenesis odontogenesis of dentin-containing tooth anatomical structure formation involved in morphogenesis anatomical structure development odontogenesis animal organ development amelogenesis animal organ morphogenesis biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation biomineral tissue development tissue development cellular component organization cellular component disassembly extracellular matrix disassembly extracellular matrix organization cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization proteolysis	cellular anatomical structure extracellular region membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle cellular anatomical structure extracellular region membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A	IPR001314	Peptidase S1A, chymotrypsin family	Family
A	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
A	IPR001254	Serine proteases, trypsin domain	Domain
A	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
A	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9Y5K2	amelogenesis imperfecta amelogenesis imperfecta type 2A1 large cell medulloblastoma ovarian cancer Amelogenesis Imperfecta hypomaturation type angioedema medulloblastoma prostate carcinoma hypertensive disorder osteosarcoma

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.