Annotations: 6O3C

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF01534	e6o3cA1	A: alpha bundles	X: Family A G protein-coupled receptor-like (From Topology)	H: Family A G protein-coupled receptor-like (From Topology)	T: Family A G protein-coupled receptor-like	F: PF01534	ECOD (1.6)
A	PF01392	e6o3cA2	A: few secondary structure elements	X: Frizzled cysteine-rich domain-related (From Topology)	H: Frizzled cysteine-rich domain-related (From Topology)	T: Frizzled cysteine-rich domain-related	F: PF01392	ECOD (1.6)
B	PF07686	e6o3cB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07686	ECOD (1.6)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	smoothened homolog	SAbDab (2024-08-02)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01392	Fz domain (Fz)	Fz domain	Also known as the CRD (cysteine rich domain), the C6 box in MuSK receptor. This domain of unknown function has been independently identified by several groups [1,2,3,4]. The domain contains 10 conserved cysteines.	Domain
A	PF01534	Frizzled/Smoothened family membrane region (Frizzled)	Frizzled/Smoothened family membrane region	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Smoothened homolog	patched binding protein binding binding signaling receptor binding enzyme regulator activity enzyme inhibitor activity protein kinase regulator activity cAMP-dependent protein kinase regulator activity protein kinase inhibitor activity molecular function inhibitor activity molecular function regulator activity cAMP-dependent protein kinase inhibitor activity protein serine/threonine kinase inhibitor activity kinase inhibitor activity patched binding protein binding binding signaling receptor binding enzyme regulator activity enzyme inhibitor activity protein kinase regulator activity cAMP-dependent protein kinase regulator activity protein kinase inhibitor activity molecular function inhibitor activity molecular function regulator activity cAMP-dependent protein kinase inhibitor activity protein serine/threonine kinase inhibitor activity kinase inhibitor activity kinase regulator activity sterol binding oxysterol binding organic cyclic compound binding steroid binding lipid binding molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity molecular sequestering activity protein sequestering activity protein kinase A catalytic subunit binding protein kinase A binding kinase binding enzyme binding protein kinase binding	cellular response to stimulus response to sterol response to stimulus response to lipid response to alcohol cellular response to organic cyclic compound response to oxygen-containing compound response to cholesterol cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to alcohol response to chemical cellular response to lipid cellular process cellular response to stimulus response to sterol response to stimulus response to lipid response to alcohol cellular response to organic cyclic compound response to oxygen-containing compound response to cholesterol cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to alcohol response to chemical cellular response to lipid cellular process cellular response to sterol cellular response to cholesterol response to organic cyclic compound developmental process multicellular organism development multicellular organismal process anatomical structure development pattern specification process regulation of protein stability biological regulation regulation of biological quality protein stabilization dorsal/ventral pattern formation regionalization apoptotic process cell death programmed cell death regulation of cellular process regulation of protein modification process regulation of protein phosphorylation negative regulation of biological process negative regulation of phosphate metabolic process negative regulation of cellular metabolic process regulation of primary metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process negative regulation of protein modification process negative regulation of cellular process protein metabolic process protein modification process phosphorus metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biological process organonitrogen compound metabolic process protein phosphorylation phosphorylation regulation of protein metabolic process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process negative regulation of protein phosphorylation macromolecule modification negative regulation of phosphorus metabolic process metabolic process regulation of phosphorylation regulation of phosphorus metabolic process macromolecule metabolic process negative regulation of phosphorylation regulation of metabolic process epithelium development epidermis development molting cycle process hair cycle epidermis morphogenesis animal organ development morphogenesis of an epithelium tissue development tissue morphogenesis anatomical structure morphogenesis skin development skin epidermis development hair follicle development molting cycle hair cycle process hair follicle morphogenesis cellular developmental process astrocyte differentiation cell development astrocyte activation glial cell development neurogenesis astrocyte development gliogenesis cell differentiation response to stress system development defense response cell activation nervous system development central nervous system development glial cell differentiation glial cell activation inflammatory response neuroinflammatory response head development brain morphogenesis forebrain development brain development forebrain morphogenesis animal organ morphogenesis ossification epithelial cell differentiation pancreas development columnar/cuboidal epithelial cell development endocrine pancreas development type B pancreatic cell differentiation glandular epithelial cell development endocrine system development type B pancreatic cell development glandular epithelial cell differentiation epithelial cell development enteroendocrine cell differentiation columnar/cuboidal epithelial cell differentiation cellular biosynthetic process RNA metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription negative regulation of RNA metabolic process multicellular organism growth developmental growth growth positive regulation of autophagy catabolic process autophagy positive regulation of biological process positive regulation of cellular metabolic process regulation of catabolic process regulation of autophagy cellular catabolic process positive regulation of catabolic process positive regulation of metabolic process regulation of cellular catabolic process positive regulation of cellular catabolic process process utilizing autophagic mechanism positive regulation of cellular process regulation of somatic stem cell population maintenance regulation of developmental process regulation of stem cell population maintenance stem cell population maintenance somatic stem cell population maintenance regulation of multicellular organismal process maintenance of cell number cell population proliferation positive regulation of cell population proliferation positive regulation of neural precursor cell proliferation regulation of cell population proliferation neural precursor cell proliferation regulation of neural precursor cell proliferation heart development cardiac atrium morphogenesis cardiac chamber morphogenesis heart morphogenesis cardiac atrium development circulatory system development cardiac septum development cardiac septum morphogenesis cardiac chamber development atrial septum morphogenesis atrial septum development mesonephric epithelium development kidney epithelium development branching morphogenesis of an epithelial tube nephron tubule morphogenesis regulation of kidney development regulation of branching involved in ureteric bud morphogenesis positive regulation of developmental process tube morphogenesis nephron development regulation of morphogenesis of a branching structure regulation of animal organ morphogenesis positive regulation of multicellular organismal process mesonephric tubule development renal tubule morphogenesis nephron morphogenesis nephron epithelium morphogenesis nephron tubule development renal system development ureteric bud morphogenesis positive regulation of morphogenesis of an epithelium branching involved in ureteric bud morphogenesis renal tubule development regulation of morphogenesis of an epithelium epithelial tube morphogenesis regulation of anatomical structure morphogenesis nephron epithelium development ureteric bud development tube development mesonephros development kidney morphogenesis morphogenesis of a branching structure positive regulation of branching involved in ureteric bud morphogenesis mesonephric tubule morphogenesis kidney development morphogenesis of a branching epithelium negative regulation of programmed cell death regulation of apoptotic process regulation of programmed cell death negative regulation of apoptotic process generation of neurons central nervous system neuron differentiation neuron differentiation positive regulation of cell communication positive regulation of signal transduction signaling regulation of signal transduction cell communication positive regulation of response to stimulus positive regulation of smoothened signaling pathway signal transduction regulation of smoothened signaling pathway regulation of signaling cell surface receptor signaling pathway smoothened signaling pathway regulation of response to stimulus regulation of cell communication positive regulation of signaling positive regulation of mesenchymal cell proliferation regulation of mesenchymal cell proliferation mesenchymal cell proliferation diencephalon development thalamus development left/right axis specification left/right pattern formation axis specification regulation of hepatocyte proliferation gland development liver development gland morphogenesis epithelial cell proliferation liver morphogenesis negative regulation of cell population proliferation epithelial cell proliferation involved in liver morphogenesis hepatocyte proliferation hepaticobiliary system development negative regulation of hepatocyte proliferation regulation of epithelial cell proliferation negative regulation of epithelial cell proliferation regulation of heart morphogenesis blood vessel morphogenesis vasculogenesis vasculature development blood vessel development mesenchymal to epithelial transition involved in renal vesicle formation renal vesicle morphogenesis metanephric renal vesicle morphogenesis renal vesicle development metanephros development metanephric renal vesicle formation metanephros morphogenesis metanephric nephron development mesenchymal to epithelial transition involved in metanephric renal vesicle formation mesenchymal to epithelial transition involved in metanephros morphogenesis epithelial cell differentiation involved in kidney development mesenchymal to epithelial transition metanephric nephron morphogenesis cell differentiation involved in metanephros development cell differentiation involved in kidney development anatomical structure formation involved in morphogenesis renal vesicle formation regulation of growth regulation of developmental growth positive regulation of organ growth organ growth positive regulation of growth regulation of organ growth positive regulation of developmental growth negative regulation of gene expression lateral mesoderm development mesenchyme development determination of left/right asymmetry in lateral mesoderm determination of bilateral symmetry determination of left/right symmetry mesoderm development specification of symmetry dopaminergic neuron differentiation somite development embryo development cell fate specification cell fate commitment neuroblast proliferation digestive system development midgut development digestive tract development regulation of localization localization multicellular organismal-level homeostasis homeostatic process homeostasis of number of cells within a tissue anatomical structure homeostasis tissue homeostasis homeostasis of number of cells mammary gland epithelial cell differentiation mammary gland development mammary gland epithelium development cell-cell signaling epithelial-mesenchymal cell signaling muscle cell migration myoblast migration cell migration cell motility positive regulation of macromolecule biosynthetic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of gene expression positive regulation of cellular biosynthetic process pancreas morphogenesis cerebellum morphogenesis cerebellar cortex morphogenesis hindbrain morphogenesis cerebellar cortex development cerebellum development metencephalon development hindbrain development protein localization establishment of protein localization cellular localization nitrogen compound transport nucleocytoplasmic transport transport nuclear transport intracellular transport protein localization to nucleus establishment of localization import into nucleus establishment of protein localization to organelle protein transport cellular macromolecule localization macromolecule localization protein localization to organelle establishment of localization in cell protein import into nucleus intracellular protein transport regulation of protein localization positive regulation of nucleocytoplasmic transport positive regulation of establishment of protein localization regulation of protein localization to nucleus positive regulation of protein transport regulation of protein import into nucleus positive regulation of intracellular transport regulation of intracellular transport regulation of transport positive regulation of protein localization to nucleus regulation of establishment of protein localization positive regulation of protein import into nucleus regulation of nucleocytoplasmic transport regulation of protein transport positive regulation of transport regulation of cellular localization positive regulation of protein localization regulation of intracellular protein transport positive regulation of intracellular protein transport embryo development ending in birth or egg hatching chordate embryonic development in utero embryonic development embryonic organ development regulation of cell activation positive regulation of hepatic stellate cell activation fibroblast activation regulation of hepatic stellate cell activation positive regulation of cell activation hepatic stellate cell activation pallium development cerebral cortex development telencephalon development neural tube development dorsal/ventral neural tube patterning neural tube patterning positive regulation of DNA-templated transcription positive regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process embryonic heart tube development embryonic heart tube morphogenesis heart looping embryonic organ morphogenesis embryonic morphogenesis determination of heart left/right asymmetry osteoblast differentiation myotube cell development skeletal muscle fiber development skeletal muscle tissue development muscle cell differentiation myotube differentiation muscle structure development skeletal muscle organ development muscle cell development muscle tissue development muscle organ development striated muscle cell differentiation odontogenesis of dentin-containing tooth odontogenesis axon extension axonogenesis cell projection organization plasma membrane bounded cell projection morphogenesis neuron projection development cell morphogenesis cell growth cellular component organization cell projection morphogenesis neuron projection morphogenesis axon extension involved in axon guidance cellular component organization or biogenesis neuron projection extension involved in neuron projection guidance neuron projection extension plasma membrane bounded cell projection organization developmental cell growth axon guidance axon development cell morphogenesis involved in neuron differentiation developmental growth involved in morphogenesis neuron projection guidance neuron development ventral midline determination ventral midline development regulation of cell differentiation regulation of epithelial cell differentiation negative regulation of cell differentiation regulation of multicellular organismal development negative regulation of epithelial cell differentiation negative regulation of developmental process spinal cord dorsal/ventral patterning spinal cord development spinal cord patterning positive regulation of epithelial cell proliferation stem cell development neural crest cell differentiation neural crest cell development mesenchymal cell migration stem cell differentiation ameboidal-type cell migration mesenchymal cell differentiation neural crest cell migration neuron apoptotic process negative regulation of neuron apoptotic process regulation of neuron apoptotic process commissural neuron axon guidance regulation of vascular associated smooth muscle cell migration positive regulation of locomotion vascular associated smooth muscle cell migration regulation of cell motility regulation of smooth muscle cell migration positive regulation of smooth muscle cell migration positive regulation of cell migration smooth muscle cell migration regulation of locomotion positive regulation of cell motility regulation of cell migration locomotion positive regulation of vascular associated smooth muscle cell migration regulation of multicellular organism growth positive regulation of multicellular organism growth dentate gyrus development hippocampus development limbic system development smooth muscle tissue development regulation of molecular function regulation of DNA binding regulation of binding negative regulation of binding negative regulation of molecular function negative regulation of DNA binding regulation of hair cycle regulation of hair follicle development negative regulation of hair follicle development negative regulation of multicellular organismal process detection of stimulus contact inhibition detection of cell density detection of biotic stimulus response to biotic stimulus positive regulation of nervous system development regulation of neuroblast proliferation regulation of neurogenesis regulation of cell development regulation of nervous system development positive regulation of cell differentiation positive regulation of neurogenesis positive regulation of cell development positive regulation of neuroblast proliferation anterior/posterior pattern specification	growth cone axon cell projection distal axon neuron projection axonal growth cone cellular anatomical entity plasma membrane bounded cell projection site of polarized growth intracellular organelle microtubule organizing center intracellular anatomical structure cytoskeleton organelle growth cone axon cell projection distal axon neuron projection axonal growth cone cellular anatomical entity plasma membrane bounded cell projection site of polarized growth intracellular organelle microtubule organizing center intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle centriole microtubule cytoskeleton non-membrane-bounded organelle membrane microdomain cell periphery membrane raft plasma membrane raft membrane plasma membrane plasma membrane region caveola membrane-bounded organelle cilium ciliary membrane bounding membrane of organelle organelle membrane cell projection membrane endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system cytoplasmic vesicle late endosome cytoplasm vesicle dendrite terminus somatodendritic compartment dendritic growth cone dendrite dendritic tree cytoplasmic vesicle membrane vesicle membrane endocytic vesicle membrane endocytic vesicle Golgi apparatus cell body neuronal cell body endoplasmic reticulum-Golgi intermediate compartment non-motile cilium 9+0 non-motile cilium endoplasmic reticulum
B	NbSmo8	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036790	Frizzled cysteine-rich domain superfamily	Homologous Superfamily
A	IPR041771	Smoothened, cysteine-rich domain	Domain
A	IPR017981	GPCR, family 2-like, 7TM	Domain
A	IPR020067	Frizzled domain	Domain
A	IPR035683	Smoothened, 7TM	Domain
A	IPR015526	Frizzled/secreted frizzled-related protein	Family
A	IPR000539	Frizzled/Smoothened, 7TM	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Alpha-helical polytopic	Rhodopsin-like receptors and pumps	Frizzled/Smoothened family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class F	Smoothened (SMO) receptor bound to SAG21k, cholesterol, and NbSmo8

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.