Annotations: 8I91

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	8037105	3001975	SCOP2B (2021-05-27)
C	SCOP2B Superfamily	Metalloproteases (zincins) catalytic domain	8037105	3001975	SCOP2B (2021-05-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF16959	Renal amino acid transporter (Collectrin)	Renal amino acid transporter	Collectrin is a single-pass transmembrane protein that is homologous to the C-terminal region of human angiotensin-converting enzyme 2, ACE2, SwissProt:Q9BYF1, found in Peptidase_M2 Pfam:PF01401 [1]. Collectrin is critical for normal amino acid reabs ...	Collectrin is a single-pass transmembrane protein that is homologous to the C-terminal region of human angiotensin-converting enzyme 2, ACE2, SwissProt:Q9BYF1, found in Peptidase_M2 Pfam:PF01401 [1]. Collectrin is critical for normal amino acid reabsorption in the kidney [2].	Domain
B, D	PF00209	Sodium:neurotransmitter symporter family (SNF)	Sodium:neurotransmitter symporter family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Angiotensin-converting enzyme 2	peptidase activity catalytic activity, acting on a protein metallopeptidase activity hydrolase activity catalytic activity protein binding binding virus receptor activity exogenous protein binding metallocarboxypeptidase activity exopeptidase activity metalloexopeptidase activity carboxypeptidase activity peptidyl-dipeptidase activity peptidase activity catalytic activity, acting on a protein metallopeptidase activity hydrolase activity catalytic activity protein binding binding virus receptor activity exogenous protein binding metallocarboxypeptidase activity exopeptidase activity metalloexopeptidase activity carboxypeptidase activity peptidyl-dipeptidase activity endopeptidase activity cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding identical protein binding	regulation of systemic arterial blood pressure by renin-angiotensin regulation of systemic arterial blood pressure by hormone multicellular organismal process peptide hormone processing regulation of systemic arterial blood pressure mediated by a chemical signal system process cellular biosynthetic process signaling receptor ligand precursor processing protein maturation circulatory system process proteolysis amide metabolic process protein metabolic process regulation of biological quality regulation of systemic arterial blood pressure by renin-angiotensin regulation of systemic arterial blood pressure by hormone multicellular organismal process peptide hormone processing regulation of systemic arterial blood pressure mediated by a chemical signal system process cellular biosynthetic process signaling receptor ligand precursor processing protein maturation circulatory system process proteolysis amide metabolic process protein metabolic process regulation of biological quality blood circulation organonitrogen compound metabolic process regulation of blood pressure regulation of hormone levels cellular metabolic process biological regulation regulation of systemic arterial blood pressure by circulatory renin-angiotensin primary metabolic process gene expression macromolecule biosynthetic process hormone metabolic process regulation of systemic arterial blood pressure endocrine process biosynthetic process regulation of angiotensin levels in blood protein processing metabolic process cellular process macromolecule metabolic process angiotensin maturation membrane organization cellular component organization membrane fusion cellular component organization or biogenesis heart process regulation of biological process regulation of cardiac conduction regulation of heart contraction regulation of system process regulation of blood circulation cardiac conduction regulation of multicellular organismal process heart contraction regulation of blood volume by renin-angiotensin nervous system process feeding behavior brain renin-angiotensin system behavior drinking behavior angiotensin-mediated drinking behavior nervous system process involved in regulation of systemic arterial blood pressure viral process viral life cycle positive regulation of cellular component organization regulation of cellular process regulation of cellular component organization gap junction assembly positive regulation of biological process cellular component biogenesis cellular component assembly positive regulation of gap junction assembly cell junction assembly positive regulation of cellular process cell-cell junction assembly cell-cell junction organization positive regulation of cellular component biogenesis regulation of gap junction assembly regulation of cellular component biogenesis regulation of cell junction assembly positive regulation of cell junction assembly cell junction organization regulation of localization regulation of transport transport regulation of transmembrane transporter activity establishment of localization regulation of transporter activity transmembrane transport regulation of molecular function localization regulation of transmembrane transport import into cell receptor-mediated endocytosis of virus by host cell biological process involved in interspecies interaction between organisms biological process involved in interaction with host vesicle-mediated transport biological process involved in symbiotic interaction symbiont entry into host cell symbiont entry into host endocytosis involved in viral entry into host cell endocytosis receptor-mediated endocytosis transport of virus multi-multicellular organism process maternal process involved in female pregnancy reproductive process multicellular organismal reproductive process female pregnancy multi-organism reproductive process negative regulation of cell population proliferation cell population proliferation regulation of smooth muscle cell proliferation negative regulation of biological process smooth muscle cell proliferation negative regulation of smooth muscle cell proliferation regulation of cell population proliferation negative regulation of cellular process muscle cell proliferation regulation of tube diameter regulation of tube size regulation of vasoconstriction vascular process in circulatory system blood vessel diameter maintenance vasoconstriction regulation of anatomical structure size cellular response to stimulus response to stimulus signaling negative regulation of signaling negative regulation of intracellular signal transduction regulation of signal transduction intracellular signal transduction negative regulation of cell communication cell communication regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling negative regulation of response to stimulus regulation of MAPK cascade negative regulation of signal transduction negative regulation of ERK1 and ERK2 cascade regulation of response to stimulus MAPK cascade regulation of cell communication ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade negative regulation of MAPK cascade regulation of signaling receptor activity negative regulation of molecular function negative regulation of signaling receptor activity regulation of biosynthetic process regulation of cellular metabolic process regulation of macromolecule metabolic process regulation of cellular biosynthetic process regulation of gene expression regulation of cytokine production cytokine production regulation of macromolecule biosynthetic process regulation of metabolic process reactive oxygen species metabolic process positive regulation of cellular metabolic process positive regulation of reactive oxygen species metabolic process positive regulation of metabolic process regulation of reactive oxygen species metabolic process virion attachment to host cell receptor-mediated virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host regulation of defense response regulation of response to external stimulus defense response regulation of inflammatory response response to external stimulus response to stress regulation of response to stress inflammatory response nitrogen compound transport positive regulation of amine transport amine transport amino acid transport positive regulation of amino acid transport positive regulation of transport regulation of amino acid transport regulation of amine transport aromatic amino acid transport organic anion transport carboxylic acid transport organic cation transport organic acid transport tryptophan transport carboxylic acid transmembrane transport regulation of L-proline import across plasma membrane regulation of proline transport organic acid transmembrane transport import across plasma membrane L-proline transmembrane transport proline transport regulation of amino acid import across plasma membrane L-alpha-amino acid transmembrane transport amino acid import across plasma membrane proline import across plasma membrane regulation of proline import across plasma membrane positive regulation of L-proline import across plasma membrane amino acid transmembrane transport L-amino acid transport positive regulation of transmembrane transport regulation of amino acid transmembrane transport neutral amino acid transport L-proline import across plasma membrane positive regulation of organic acid transport proline transmembrane transport positive regulation of proline import across plasma membrane regulation of organic acid transport entry receptor-mediated virion attachment to host cell positive regulation of blood circulation positive regulation of cardiac muscle contraction cardiac muscle contraction striated muscle contraction positive regulation of striated muscle contraction regulation of cardiac muscle contraction muscle contraction muscle system process regulation of muscle system process positive regulation of heart contraction regulation of striated muscle contraction regulation of muscle contraction positive regulation of muscle contraction positive regulation of multicellular organismal process	membrane-bounded organelle cell projection organelle cilium cellular anatomical entity plasma membrane bounded cell projection membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane extracellular exosome extracellular vesicle membrane-bounded organelle cell projection organelle cilium cellular anatomical entity plasma membrane bounded cell projection membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cell surface membrane microdomain membrane raft intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane endocytic vesicle membrane cytoplasm organelle membrane endocytic vesicle membrane-enclosed lumen endomembrane system intracellular organelle lumen endoplasmic reticulum lumen organelle lumen endoplasmic reticulum brush border membrane cluster of actin-based cell projections brush border cell projection membrane
B, D	SIT1	L-amino acid transmembrane transporter activity organic cation transmembrane transporter activity branched-chain amino acid transmembrane transporter activity carboxylic acid transmembrane transporter activity L-isoleucine transmembrane transporter activity amino acid transmembrane transporter activity neutral L-amino acid transmembrane transporter activity transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity monoatomic cation transmembrane transporter activity amino acid:sodium symporter activity solute:sodium symporter activity L-amino acid transmembrane transporter activity organic cation transmembrane transporter activity branched-chain amino acid transmembrane transporter activity carboxylic acid transmembrane transporter activity L-isoleucine transmembrane transporter activity amino acid transmembrane transporter activity neutral L-amino acid transmembrane transporter activity transporter activity organic acid transmembrane transporter activity transmembrane transporter activity organic anion transmembrane transporter activity monoatomic cation transmembrane transporter activity amino acid:sodium symporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity proline:sodium symporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity active monoatomic ion transmembrane transporter activity organic acid:sodium symporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity amino acid:monoatomic cation symporter activity monoatomic ion transmembrane transporter activity metal ion transmembrane transporter activity symporter activity L-proline transmembrane transporter activity amino-acid betaine transmembrane transporter activity quaternary ammonium group transmembrane transporter activity modified amino acid transmembrane transporter activity	organic acid transport amino acid transport localization nitrogen compound transport organic anion transport carboxylic acid transport transport neutral amino acid transport proline transport establishment of localization organic acid transmembrane transport import into cell glycine import across plasma membrane carboxylic acid transmembrane transport organic acid transport amino acid transport localization nitrogen compound transport organic anion transport carboxylic acid transport transport neutral amino acid transport proline transport establishment of localization organic acid transmembrane transport import into cell glycine import across plasma membrane carboxylic acid transmembrane transport glycine transport import across plasma membrane amino acid transmembrane transport L-amino acid transport organic cation transport transmembrane transport L-alpha-amino acid transmembrane transport cellular process amino acid import across plasma membrane quaternary ammonium group transport modified amino acid transport amino-acid betaine transport proline import across plasma membrane L-proline transmembrane transport L-proline import across plasma membrane proline transmembrane transport L-isoleucine import across plasma membrane branched-chain amino acid transport isoleucine transport isoleucine transmembrane transport multicellular organismal process system process circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier monoatomic ion transmembrane transport sodium ion transmembrane transport inorganic ion transmembrane transport metal ion transport inorganic cation transmembrane transport monoatomic cation transmembrane transport monoatomic ion transport monoatomic cation transport sodium ion transport	cell periphery apical part of cell membrane plasma membrane plasma membrane region cellular anatomical entity apical plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR031588	Collectrin domain	Domain
A, C	IPR001548	Peptidase M2, peptidyl-dipeptidase A	Family
B, D	IPR000175	Sodium:neurotransmitter symporter	Family
B, D	IPR002438	Neutral amino acid SLC6 transporter	Family
B, D	IPR037272	Sodium:neurotransmitter symporter superfamily	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	SIT1 (SLC6A20) in complex with angiotensin-converting enzyme 2 (ACE2), with bound proline

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.