2IK8 | pdb_00002ik8

Crystal structure of the heterodimeric complex of human RGS16 and activated Gi alpha 1

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
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: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d2ik8b1	All alpha proteins	Regulator of G-protein signaling, RGS	Regulator of G-protein signaling, RGS	Regulator of G-protein signaling, RGS	Regulator of G-protein signaling 16, RGS16	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d2ik8d_	All alpha proteins	Regulator of G-protein signaling, RGS	Regulator of G-protein signaling, RGS	Regulator of G-protein signaling, RGS	Regulator of G-protein signaling 16, RGS16	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2ik8a1	All alpha proteins	Transducin (alpha subunit), insertion domain	Transducin (alpha subunit), insertion domain	Transducin (alpha subunit), insertion domain	Transducin (alpha subunit), insertion domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2ik8a2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	Transducin (alpha subunit)	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d2ik8c1	All alpha proteins	Transducin (alpha subunit), insertion domain	Transducin (alpha subunit), insertion domain	Transducin (alpha subunit), insertion domain	Transducin (alpha subunit), insertion domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d2ik8c2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	Transducin (alpha subunit)	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Regulator of G-protein signaling, RGS	8020790	4001125	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Regulator of G-protein signaling, RGS	8033170	3000835	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Regulator of G-protein signaling, RGS	8033170	3000835	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ras-like P-loop GTPases	8056779	3002022	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Galpha insert domain-like	8056780	3000669	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ras-like P-loop GTPases	8056779	3002022	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Ras-like P-loop GTPases	8056779	3002022	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Ras-like P-loop GTPases	8056779	3002022	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Galpha insert domain-like	8056780	3000669	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)
B		e2ik8B1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: p53 tetramerization domain	H: p53 tetramerization domain	T: Cation_efflux	F:	ECOD (20:10:01)
D		e2ik8D1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: p53 tetramerization domain	H: p53 tetramerization domain	T: Cation_efflux	F:	ECOD (20:10:01)
A		e2ik8A1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: p53 tetramerization domain	H: p53 tetramerization domain	T: Cation_efflux	F:	ECOD (20:10:01)
A		e2ik8A2	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: GBP	F:	ECOD (20:10:01)
C		e2ik8C1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: p53 tetramerization domain	H: p53 tetramerization domain	T: Cation_efflux	F:	ECOD (20:10:01)
C		e2ik8C2	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: GBP	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.196.10	Mainly Alpha	Orthogonal Bundle	Regulator of G-protein Signalling 4	domain 1	CATH (4.3.0)
B	1.10.167.10	Mainly Alpha	Orthogonal Bundle	Regulator of G-protein Signalling 4	domain 2	CATH (4.3.0)
D	1.10.196.10	Mainly Alpha	Orthogonal Bundle	Regulator of G-protein Signalling 4	domain 1	CATH (4.3.0)
D	1.10.167.10	Mainly Alpha	Orthogonal Bundle	Regulator of G-protein Signalling 4	domain 2	CATH (4.3.0)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
A	1.10.400.10	Mainly Alpha	Orthogonal Bundle	GI Alpha 1, domain 2-like	GI Alpha 1, domain 2-like	CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
C	1.10.400.10	Mainly Alpha	Orthogonal Bundle	GI Alpha 1, domain 2-like	GI Alpha 1, domain 2-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF00615	Regulator of G protein signaling domain (RGS)	Regulator of G protein signaling domain	RGS family members are GTPase-activating proteins for heterotrimeric G-protein alpha-subunits.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	Regulator of G-protein signaling 16	protein binding binding calmodulin binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides protein binding binding calmodulin binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	cellular response to stimulus regulation of signaling regulation of biological process regulation of cellular process response to stimulus negative regulation of signaling signaling negative regulation of response to stimulus biological regulation negative regulation of biological process regulation of signal transduction negative regulation of signal transduction negative regulation of cell communication cell communication regulation of response to stimulus cellular response to stimulus regulation of signaling regulation of biological process regulation of cellular process response to stimulus negative regulation of signaling signaling negative regulation of response to stimulus biological regulation negative regulation of biological process regulation of signal transduction negative regulation of signal transduction negative regulation of cell communication cell communication regulation of response to stimulus negative regulation of cellular process regulation of cell communication cellular process signal transduction G protein-coupled receptor signaling pathway regulation of G protein-coupled receptor signaling pathway multicellular organismal process sensory perception of light stimulus system process sensory perception nervous system process visual perception positive regulation of molecular function regulation of molecular function positive regulation of hydrolase activity regulation of catalytic activity regulation of hydrolase activity positive regulation of catalytic activity regulation of GTPase activity positive regulation of GTPase activity	cellular anatomical structure membrane cell periphery plasma membrane intracellular anatomical structure cytoplasm
A, C	Guanine nucleotide-binding protein G(i), alpha-1 subunit	D2 dopamine receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding dopamine receptor binding enzyme regulator activity adenylate cyclase inhibitor activity cyclase regulator activity molecular function inhibitor activity cyclase inhibitor activity molecular function regulator activity enzyme inhibitor activity adenylate cyclase regulator activity D2 dopamine receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding dopamine receptor binding enzyme regulator activity adenylate cyclase inhibitor activity cyclase regulator activity molecular function inhibitor activity cyclase inhibitor activity molecular function regulator activity enzyme inhibitor activity adenylate cyclase regulator activity guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding magnesium ion binding metal ion binding GDP binding G protein-coupled serotonin receptor binding protein-containing complex binding G-protein beta/gamma-subunit complex binding pyrophosphatase activity GTPase activity G protein activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway adenylate cyclase-inhibiting serotonin receptor signaling pathway G protein-coupled serotonin receptor signaling pathway adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway adenylate cyclase-inhibiting serotonin receptor signaling pathway G protein-coupled serotonin receptor signaling pathway adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway response to hormone response to chemical response to endogenous stimulus response to peptide hormone response to oxygen-containing compound response to nitrogen compound cell division leukocyte migration immune system process mononuclear cell migration lymphocyte migration cell migration T cell migration cell motility regulation of steroid biosynthetic process regulation of cholesterol biosynthetic process regulation of cholesterol metabolic process steroid metabolic process regulation of lipid metabolic process sterol metabolic process positive regulation of biological process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of small molecule metabolic process positive regulation of biosynthetic process positive regulation of lipid metabolic process small molecule metabolic process steroid biosynthetic process positive regulation of cellular process regulation of biosynthetic process secondary alcohol biosynthetic process regulation of alcohol biosynthetic process small molecule biosynthetic process regulation of steroid metabolic process cholesterol biosynthetic process positive regulation of cholesterol biosynthetic process primary metabolic process secondary alcohol metabolic process positive regulation of steroid biosynthetic process biosynthetic process sterol biosynthetic process positive regulation of lipid biosynthetic process regulation of sterol biosynthetic process alcohol biosynthetic process positive regulation of cholesterol metabolic process positive regulation of steroid metabolic process metabolic process regulation of lipid biosynthetic process positive regulation of small molecule metabolic process regulation of metabolic process positive regulation of alcohol biosynthetic process positive regulation of sterol biosynthetic process lipid metabolic process cell surface receptor signaling pathway response to cytokine response to chemokine cytokine-mediated signaling pathway cellular response to chemokine chemokine-mediated signaling pathway response to peptide cellular response to cytokine stimulus multicellular organismal process system process relaxation of smooth muscle regulation of system process regulation of muscle system process muscle system process relaxation of muscle positive regulation of relaxation of smooth muscle positive regulation of relaxation of muscle positive regulation of multicellular organismal process regulation of multicellular organismal process regulation of relaxation of smooth muscle regulation of relaxation of muscle negative regulation of protein transport regulation of localization establishment of protein localization nitrogen compound transport negative regulation of biological process negative regulation of transport localization negative regulation of secretion negative regulation of hormone secretion negative regulation of secretion by cell intracellular protein localization regulation of biological quality regulation of peptide hormone secretion negative regulation of peptide hormone secretion regulation of hormone levels establishment of protein localization to extracellular region negative regulation of establishment of protein localization protein secretion establishment of localization regulation of protein secretion regulation of secretion negative regulation of protein secretion regulation of hormone secretion regulation of protein localization regulation of peptide secretion transport negative regulation of signaling hormone secretion negative regulation of cell communication protein localization to extracellular region negative regulation of peptide secretion peptide secretion regulation of secretion by cell secretion by cell signal release negative regulation of cellular process negative regulation of protein localization regulation of signaling regulation of transport secretion regulation of peptide transport regulation of establishment of protein localization export from cell cell-cell signaling regulation of protein transport peptide transport negative regulation of insulin secretion protein transport regulation of insulin secretion peptide hormone secretion macromolecule localization hormone transport regulation of cell communication insulin secretion adenylate cyclase-activating G protein-coupled receptor signaling pathway regulation of cytoskeleton organization regulation of cellular component organization microtubule cytoskeleton organization regulation of mitotic spindle organization mitotic cell cycle cellular component organization cell cycle cellular component organization or biogenesis regulation of cell cycle microtubule cytoskeleton organization involved in mitosis spindle organization cell cycle process regulation of cell cycle process regulation of microtubule-based process regulation of spindle organization regulation of organelle organization mitotic spindle organization organelle organization mitotic cell cycle process microtubule-based process cytoskeleton organization regulation of microtubule cytoskeleton organization positive regulation of protein localization to cell periphery protein localization to cell periphery positive regulation of protein localization to cell cortex regulation of protein localization to cell periphery regulation of protein localization to cell cortex positive regulation of protein localization protein localization to cell cortex response to ketone response to prostaglandin response to lipid response to alcohol response to prostaglandin E cellular response to forskolin cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to alcohol response to forskolin cellular response to lipid cellular response to ketone	midbody cellular anatomical structure membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle membraneless organelle midbody cellular anatomical structure membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle membraneless organelle nuclear lumen cell periphery cell cortex cytoplasm protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex heterotrimeric G-protein complex side of membrane cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle centrosome microtubule organizing center cytoskeleton microtubule cytoskeleton centriolar satellite cytosol cell projection sperm principal piece cilium 9+2 motile cilium sperm flagellum motile cilium plasma membrane bounded cell projection nucleoplasm vacuolar membrane lytic vacuole vacuole lytic vacuole membrane bounding membrane of organelle lysosomal membrane organelle membrane lysosome Golgi apparatus endomembrane system ciliary basal body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR016137	RGS domain	Domain
B, D	IPR036305	RGS domain superfamily	Homologous Superfamily
B, D	IPR044926	RGS, subdomain 2	Homologous Superfamily
B, D	IPR024066	RGS, subdomain 1/3	Homologous Superfamily
A, C	IPR001019	Guanine nucleotide binding protein, alpha subunit	Family
A, C	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
A, C	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, C	IPR001408	G-protein alpha subunit, group I	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B, D	Pharos: O15492	breast cancer invasive ductal breast carcinoma malignant ependymoma non-small cell lung carcinoma pituitary cancer glioblastoma large cell medulloblastoma malignant pancreatic neoplasm oligodendroglioma tuberculosis interstitial lung disease lung cancer medulloblastoma ovarian cancer
A, C	Pharos: P63096	substance withdrawal syndrome dissociative amnesia malignant glioma nicotine dependence pancreatic ductal adenocarcinoma acute myeloid leukemia Withdrawal Symptoms breast cancer glioblastoma intellectual disability large cell medulloblastoma malignant pancreatic neoplasm oligodendroglioma Pick disease astrocytic tumor substance withdrawal syndrome dissociative amnesia malignant glioma nicotine dependence pancreatic ductal adenocarcinoma acute myeloid leukemia Withdrawal Symptoms breast cancer glioblastoma intellectual disability large cell medulloblastoma malignant pancreatic neoplasm oligodendroglioma Pick disease astrocytic tumor breast carcinoma interstitial cystitis malignant colon neoplasm medulloblastoma ovarian cancer subependymal giant cell astrocytoma amnestic disorder atypical teratoid rhabdoid tumor breast fibroadenoma ductal breast carcinoma in situ invasive ductal breast carcinoma

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.