Annotations: 9UCP

cryo-EM structure of M1 muscarinic acetylcholine receptor-alpha5 helix of G11 protein complex bound to iperoxo and nanobody Nb1B4

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	7tm_2	e9ucpC1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: 7tm_2	ECOD (v295.2)
A	Fusion_gly	e9ucpA1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Fusion_gly	ECOD (v295.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C	Heavy Chain	IGHV1	-	m1 muscarinic acetylcholine receptor, de novo designprotein	SAbDab (2026-09-25)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Nanobody Nb1B4	-	-	-
B	Guanine nucleotide-binding protein subunit alpha-11	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 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 protein-containing complex binding G-protein beta/gamma-subunit complex binding pyrophosphatase activity GTPase activity G protein activity ribonucleoside triphosphate phosphatase activity molecular function regulator activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity protein binding signaling receptor binding G protein-coupled receptor binding	multicellular organismal process system process circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation rhythmic process regulation of biological process entrainment of circadian clock response to stimulus circadian rhythm response to external stimulus regulation of circadian rhythm multicellular organismal process system process circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation rhythmic process regulation of biological process entrainment of circadian clock response to stimulus circadian rhythm response to external stimulus regulation of circadian rhythm cellular response to stimulus cellular response to nitrogen compound regulation of cellular process signaling cell communication phospholipase C-activating G protein-coupled receptor signaling pathway synaptic signaling phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway signal transduction cellular response to acetylcholine response to oxygen-containing compound cell-cell signaling response to nitrogen compound acetylcholine receptor signaling pathway postsynaptic signal transduction cellular response to oxygen-containing compound cellular response to chemical stimulus G protein-coupled acetylcholine receptor signaling pathway response to chemical response to acetylcholine G protein-coupled receptor signaling pathway cellular process developmental process anatomical structure development cranial skeletal system development animal gross anatomical part developmental process action potential regulation of membrane potential adenylate cyclase-modulating G protein-coupled receptor signaling pathway endothelin receptor signaling pathway detection of light stimulus response to light stimulus phototransduction detection of external stimulus detection of visible light detection of abiotic stimulus detection of stimulus response to abiotic stimulus response to radiation phototransduction, visible light phospholipase C-activating dopamine receptor signaling pathway response to dopamine cellular response to dopamine response to monoamine response to catecholamine cellular response to catecholamine stimulus G protein-coupled dopamine receptor signaling pathway cellular response to monoamine stimulus	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm non-motile cilium 9+0 non-motile cilium cilium neuron projection photoreceptor outer segment plasma membrane bounded cell projection cell projection photoreceptor cell cilium vacuolar membrane lytic vacuole vacuole intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle lysosomal membrane organelle membrane lysosome synapse cell junction cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane
A	M1 muscarinic acetylcholine receptor, de novo design protein	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR001019	Guanine nucleotide binding protein, alpha subunit	Family
B	IPR000654	G-protein alpha subunit, group Q	Family
B	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	: P29992	melanoma uveal melanoma familial hypocalciuric hypercalcemia 2 autosomal dominant hypocalcemia 2 autosomal dominant hypocalcemia cutaneous melanoma phakomatosis cesiomarmorata spina bifida astrocytic tumor autosomal dominant hypocalcemia 1 Congenital Heart Defects malignant colon neoplasm ovarian cancer primitive neuroectodermal tumor subependymal giant cell astrocytoma melanoma uveal melanoma familial hypocalciuric hypercalcemia 2 autosomal dominant hypocalcemia 2 autosomal dominant hypocalcemia cutaneous melanoma phakomatosis cesiomarmorata spina bifida astrocytic tumor autosomal dominant hypocalcemia 1 Congenital Heart Defects malignant colon neoplasm ovarian cancer primitive neuroectodermal tumor subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor congenital heart disease large cell medulloblastoma malignant glioma ocular melanoma phakomatosis cesioflammea psoriasis ulcerative colitis Bartter syndrome with hypocalcemia malignant choroid melanoma osteosarcoma