Annotations: 6TYL

Crystal structure of mammalian Ric-8A:Galpha(i):nanobody complex

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
H [auth B]	SCOP2B Superfamily	Ras-like P-loop GTPases	8019719	3002022	SCOP2B (2022-06-29)
I [auth G]	SCOP2B Superfamily	Ras-like P-loop GTPases	8019719	3002022	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	CFAP161	e6tylA01	A: beta barrels	X: Histone-like	H: all-alpha NTP pyrophosphatases	T: Hypothetical protein AF_0060	F: CFAP161	ECOD (v294.2)
B [auth C]	YscJ_FliF	e6tylC1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
C [auth H]	YscJ_FliF	e6tylH1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
D [auth E]	YscJ_FliF	e6tylE1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
E [auth J]	YscJ_FliF	e6tylJ1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
F [auth D]	YscJ_FliF	e6tylD1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
G [auth I]	YscJ_FliF	e6tylI1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
H [auth B]	YscJ_FliF	e6tylB1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)
I [auth G]	YscJ_FliF	e6tylG1	A: beta barrels	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: YscJ_FliF	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (utative)
J [auth F]	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth C], C [auth H]	Heavy Chain	IGHV1	-	resistance to inhibitors of cholinesterase 8 homolog a (c.elegans)	SAbDab (2026-05-08)
D [auth E], E [auth J]	Heavy Chain	IGHV1	-	resistance to inhibitors of cholinesterase 8 homolog a (c.elegans)	SAbDab (2026-05-08)
F [auth D], G [auth I]	Heavy Chain	IGHV1	-	resistance to inhibitors of cholinesterase 8 homolog a (c.elegans)	SAbDab (2026-05-08)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, J [auth F]	PF10165	Guanine nucleotide exchange factor synembryn (Ric8)	Guanine nucleotide exchange factor synembryn	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, J [auth F]	Resistance to inhibitors of cholinesterase 8 homolog A (C. elegans)	protein binding binding G-protein alpha-subunit binding GTPase regulator activity enzyme regulator activity guanyl-nucleotide exchange factor activity nucleoside-triphosphatase regulator activity molecular function regulator activity enzyme activator activity GTPase activator activity molecular function activator activity protein folding chaperone	developmental process multicellular organismal process embryonic morphogenesis embryo development gastrulation multicellular organism development anatomical structure morphogenesis ameboidal-type cell migration anatomical structure development cell migration cellular process cell motility cell migration involved in gastrulation cellular response to stimulus developmental process multicellular organismal process embryonic morphogenesis embryo development gastrulation multicellular organism development anatomical structure morphogenesis ameboidal-type cell migration anatomical structure development cell migration cellular process cell motility cell migration involved in gastrulation cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction cell-cell adhesion involved in gastrulation cell adhesion cell-cell adhesion response to light stimulus response to radiation response to abiotic stimulus vasculature development system development circulatory system development system process learning learning or memory nervous system process visual learning visual behavior cognition associative learning behavior embryo development ending in birth or egg hatching chordate embryonic development in utero embryonic development cellular component organization extracellular matrix organization cellular component organization or biogenesis basement membrane organization extracellular structure organization external encapsulating structure organization	cellular anatomical structure membrane cell periphery cell cortex intracellular anatomical structure cytoplasm plasma membrane
B [auth C], C [auth H]	Nanobody A	-	-	-
D [auth E], E [auth J]	Nanobody B	-	-	-
F [auth D], G [auth I]	Nanobody C	-	-	-
H [auth B], I [auth G]	Guanine nucleotide-binding protein G(i) subunit alpha-1	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 GTPase activating protein binding 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	protein localization to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to cell periphery cellular localization protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels macromolecule localization protein localization to organelle protein localization to postsynaptic specialization membrane protein localization to postsynaptic membrane protein localization to cell periphery cellular localization protein localization to synapse biological regulation localization within membrane protein localization to membrane protein-containing complex localization neurotransmitter receptor localization to postsynaptic specialization membrane localization regulation of postsynaptic membrane neurotransmitter receptor levels macromolecule localization protein localization to organelle cellular process protein localization to postsynapse intracellular protein localization regulation of biological quality protein localization to cell junction receptor localization to synapse cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling adenylate cyclase-inhibiting serotonin receptor signaling pathway G protein-coupled serotonin receptor signaling pathway cell communication adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction 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 response to chemical cellular response to cytokine stimulus negative regulation of protein transport regulation of localization establishment of protein localization nitrogen compound transport negative regulation of biological process negative regulation of transport negative regulation of secretion negative regulation of hormone secretion negative regulation of secretion by cell 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 hormone transport regulation of cell communication insulin secretion 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 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 hormone response to endogenous stimulus response to alcohol response to prostaglandin E response to oxygen-containing compound trans-synaptic signaling modulation of chemical synaptic transmission negative regulation of synaptic transmission chemical synaptic transmission synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling 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 centrosome microtubule organizing center cytoskeleton microtubule cytoskeleton centriolar satellite cytosol nucleoplasm synapse cell junction glutamatergic synapse Golgi apparatus endomembrane system postsynapse cilium plasma membrane bounded cell projection ciliary basal body cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, J [auth F]	IPR016024	Armadillo-type fold	Homologous Superfamily
A, J [auth F]	IPR008376	Chaperone Ric-8 A/B	Domain
A, J [auth F]	IPR019318	Guanine nucleotide exchange factor, Ric8	Family
A, J [auth F]	IPR011989	Armadillo-like helical	Homologous Superfamily
H [auth B], I [auth G]	IPR001019	Guanine nucleotide binding protein, alpha subunit	Family
H [auth B], I [auth G]	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
H [auth B], I [auth G]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
H [auth B], I [auth G]	IPR001408	G-protein alpha subunit, group I	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, J [auth F]	SEP	Parent Component: SER : AA0037 : O-phospho-L-serine MOD:00046
A, J [auth F]	TPO	Parent Component: THR : AA0037 , AA0038 : O-phospho-L-serine MOD:00046 , O-phospho-L-threonine MOD:00047

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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.