Annotations: 4AA2

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Metalloproteases (zincins), catalytic domain	8032242	3001975	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_M2	e4aa2A1	A: mixed a+b and a/b	X: Zincin-like	H: Metalloproteases (zincins) catalytic domain (From Topology)	T: Metalloproteases (zincins) catalytic domain	F: Peptidase_M2	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01401	Angiotensin-converting enzyme (Peptidase_M2)	Angiotensin-converting enzyme	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth P]	BRADYKININ-POTENTIATING PEPTIDE B	hormone activity protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity enzyme regulator activity molecular function inhibitor activity peptidase regulator activity enzyme inhibitor activity peptidase inhibitor activity hormone activity protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity enzyme regulator activity molecular function inhibitor activity peptidase regulator activity enzyme inhibitor activity peptidase inhibitor activity toxin activity	regulation of tube diameter multicellular organismal process system process regulation of tube size biological regulation circulatory system process vascular process in circulatory system blood vessel diameter maintenance regulation of biological quality vasodilation blood circulation regulation of anatomical structure size ribose phosphate metabolic process nucleotide biosynthetic process regulation of tube diameter multicellular organismal process system process regulation of tube size biological regulation circulatory system process vascular process in circulatory system blood vessel diameter maintenance regulation of biological quality vasodilation blood circulation regulation of anatomical structure size ribose phosphate metabolic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process cyclic nucleotide metabolic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process cyclic nucleotide biosynthetic process phosphate-containing compound metabolic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process cyclic purine nucleotide metabolic process cellular metabolic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process purine-containing compound metabolic process biosynthetic process cGMP metabolic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process purine ribonucleotide metabolic process cGMP biosynthetic process purine nucleotide biosynthetic process regulation of blood pressure cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling cell communication receptor guanylyl cyclase signaling pathway signal transduction enzyme-linked receptor protein signaling pathway	extracellular region cellular anatomical entity
A	ANGIOTENSIN-CONVERTING ENZYME	peptidase activity catalytic activity, acting on a protein metallopeptidase activity hydrolase activity catalytic activity peptidyl-dipeptidase activity exopeptidase activity carboxypeptidase activity cation binding ion binding binding metal ion binding small molecule binding	sexual reproduction reproductive process developmental process multicellular organism development multicellular organismal process anatomical structure development metamorphosis peptide hormone processing cellular biosynthetic process regulation of hormone levels cellular metabolic process biological regulation signaling receptor ligand precursor processing primary metabolic process sexual reproduction reproductive process developmental process multicellular organism development multicellular organismal process anatomical structure development metamorphosis peptide hormone processing cellular biosynthetic process regulation of hormone levels cellular metabolic process biological regulation signaling receptor ligand precursor processing primary metabolic process gene expression macromolecule biosynthetic process hormone metabolic process protein maturation biosynthetic process proteolysis protein processing metabolic process cellular process amide metabolic process protein metabolic process macromolecule metabolic process regulation of biological quality response to symbiont biological process involved in interspecies interaction between organisms response to stimulus response to other organism response to bacterium response to symbiotic bacterium response to external stimulus response to external biotic stimulus response to biotic stimulus	cell periphery plasma membrane membrane cellular anatomical entity extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth P]	IPR030480	Natriuretic peptide, conserved site	Conserved Site
B [auth P]	IPR000663	Natriuretic peptide	Family
A	IPR001548	Peptidase M2, peptidyl-dipeptidase A	Family

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.