Annotations: 7RHI

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	cNMP_binding_1	e7rhiA2	A: beta sandwiches	X: jelly-roll	H: Double-stranded beta-helix (From Topology)	T: Double-stranded beta-helix	F: cNMP_binding_1	ECOD (1.6)
A	Ion_trans_2_1	e7rhiA1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: Ion_trans_2_1	ECOD (1.6)
C	cNMP_binding_1	e7rhiC2	A: beta sandwiches	X: jelly-roll	H: Double-stranded beta-helix (From Topology)	T: Double-stranded beta-helix	F: cNMP_binding_1	ECOD (1.6)
C	Ion_trans_2_1	e7rhiC1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: Ion_trans_2_1	ECOD (1.6)
D	cNMP_binding_1	e7rhiD2	A: beta sandwiches	X: jelly-roll	H: Double-stranded beta-helix (From Topology)	T: Double-stranded beta-helix	F: cNMP_binding_1	ECOD (1.6)
D	Ion_trans_2_1	e7rhiD1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: Ion_trans_2_1	ECOD (1.6)
B	cNMP_binding_1	e7rhiB1	A: beta sandwiches	X: jelly-roll	H: Double-stranded beta-helix (From Topology)	T: Double-stranded beta-helix	F: cNMP_binding_1	ECOD (1.6)
B	Ion_trans_2_1	e7rhiB2	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: Ion_trans_2_1	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, D	PF00520	Ion transport protein (Ion_trans)	Ion transport protein	-	Family
A, C, D	PF16526	C-terminal leucine zipper domain of cyclic nucleotide-gated channels (CLZ)	C-terminal leucine zipper domain of cyclic nucleotide-gated channels	-	Coiled-coil
A, C, D	PF00027	Cyclic nucleotide-binding domain (cNMP_binding)	Cyclic nucleotide-binding domain	This domain sensor domain can bind cAMP, cGMP, c-di-GMP, oxygen and 2-oxoglutarate (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain
B	PF00027	Cyclic nucleotide-binding domain (cNMP_binding)	Cyclic nucleotide-binding domain	This domain sensor domain can bind cAMP, cGMP, c-di-GMP, oxygen and 2-oxoglutarate (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, D	cGMP-gated cation channel alpha-1	binding adenyl ribonucleotide binding cyclic nucleotide binding nucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding cAMP binding adenyl nucleotide binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding cyclic nucleotide binding nucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding cAMP binding adenyl nucleotide binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding protein-containing complex binding monoatomic cation transmembrane transporter activity monoatomic ion channel activity sodium channel activity sodium ion transmembrane transporter activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity intracellularly ligand-gated monoatomic ion channel activity gated channel activity intracellularly cyclic nucleotide-activated monoatomic cation channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity intracellularly cAMP-activated cation channel activity ligand-gated monoatomic cation channel activity cyclic nucleotide-activated monoatomic ion channel activity calcium channel activity calcium ion transmembrane transporter activity guanyl nucleotide binding guanyl ribonucleotide binding cGMP binding intracellularly cGMP-activated cation channel activity	localization transport monoatomic ion transport monoatomic cation transport establishment of localization sodium ion transport metal ion transport multicellular organismal process sensory perception of light stimulus system process sensory perception nervous system process visual perception monoatomic cation transmembrane transport localization transport monoatomic ion transport monoatomic cation transport establishment of localization sodium ion transport metal ion transport multicellular organismal process sensory perception of light stimulus system process sensory perception nervous system process visual perception monoatomic cation transmembrane transport transmembrane transport monoatomic ion transmembrane transport cellular process calcium ion transport	membrane-bounded organelle non-motile cilium membrane plasma membrane cilium 9+0 non-motile cilium neuron projection cellular anatomical entity ciliary membrane photoreceptor outer segment membrane photoreceptor outer segment plasma membrane bounded cell projection cell periphery cell projection membrane-bounded organelle non-motile cilium membrane plasma membrane cilium 9+0 non-motile cilium neuron projection cellular anatomical entity ciliary membrane photoreceptor outer segment membrane photoreceptor outer segment plasma membrane bounded cell projection cell periphery cell projection bounding membrane of organelle photoreceptor cell cilium organelle plasma membrane region organelle membrane cell projection membrane rod photoreceptor outer segment intracellular cyclic nucleotide activated cation channel complex protein-containing complex transmembrane transporter complex membrane protein complex cation channel complex transporter complex monoatomic ion channel complex
B	Cyclic nucleotide-gated cation channel beta-1	ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity guanyl nucleotide binding binding cyclic nucleotide binding nucleotide binding guanyl ribonucleotide binding ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity guanyl nucleotide binding binding cyclic nucleotide binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding cGMP binding small molecule binding adenyl ribonucleotide binding cAMP binding adenyl nucleotide binding protein-containing complex binding monoatomic cation transmembrane transporter activity sodium channel activity sodium ion transmembrane transporter activity monoatomic cation channel activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity metal ion transmembrane transporter activity intracellularly ligand-gated monoatomic ion channel activity intracellularly cyclic nucleotide-activated monoatomic cation channel activity intracellularly cAMP-activated cation channel activity ligand-gated monoatomic cation channel activity cyclic nucleotide-activated monoatomic ion channel activity calcium channel activity calcium ion transmembrane transporter activity intracellularly cGMP-activated cation channel activity	response to stimulus response to chemical response to odorant detection of light stimulus involved in visual perception detection of light stimulus response to light stimulus multicellular organismal process detection of external stimulus sensory perception of light stimulus system process nervous system process response to external stimulus detection of abiotic stimulus detection of stimulus response to stimulus response to chemical response to odorant detection of light stimulus involved in visual perception detection of light stimulus response to light stimulus multicellular organismal process detection of external stimulus sensory perception of light stimulus system process nervous system process response to external stimulus detection of abiotic stimulus detection of stimulus sensory perception detection of light stimulus involved in sensory perception response to abiotic stimulus response to radiation visual perception detection of stimulus involved in sensory perception multicellular organismal-level homeostasis homeostatic process anatomical structure homeostasis tissue homeostasis retina homeostasis developmental process cellular developmental process photoreceptor cell differentiation cell development nervous system development generation of neurons cellular component organization neurogenesis multicellular organism development neuron differentiation photoreceptor cell outer segment organization cell differentiation neuron development anatomical structure development cellular process cellular component organization or biogenesis photoreceptor cell development system development regulation of cellular process cellular biosynthetic process positive regulation of biological process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of cellular process regulation of biosynthetic process regulation of biological process cellular metabolic process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular biosynthetic process sensory perception of chemical stimulus sensory perception of smell protein localization localization cellular localization protein localization to organelle cellular macromolecule localization macromolecule localization olfactory nerve maturation olfactory nerve development cranial nerve maturation developmental maturation nerve maturation nerve development cranial nerve development anatomical structure maturation inorganic ion homeostasis intracellular calcium ion homeostasis calcium ion homeostasis regulation of cytosolic calcium ion concentration cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis transport monoatomic ion transport monoatomic cation transport establishment of localization potassium ion transport metal ion transport detection of chemical stimulus detection of chemical stimulus involved in sensory perception of smell detection of chemical stimulus involved in sensory perception photoreceptor cell maintenance cellular response to stimulus signaling cell communication G protein-coupled receptor signaling pathway signal transduction ion channel modulating, G protein-coupled receptor signaling pathway sodium ion transport monoatomic cation transmembrane transport transmembrane transport monoatomic ion transmembrane transport phototransduction membrane depolarization regulation of biological quality regulation of membrane potential calcium ion transport	membrane-bounded organelle intracellular anatomical structure membrane intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle Golgi-associated vesicle membrane organelle cytoplasm membrane-bounded organelle intracellular anatomical structure membrane intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle Golgi-associated vesicle membrane organelle cytoplasm Golgi-associated vesicle vesicle organelle membrane axon synapse neuron projection axon terminus plasma membrane bounded cell projection presynapse cell projection distal axon terminal bouton cell junction neuron projection terminus non-motile cilium plasma membrane non-motile cilium membrane cilium ciliary membrane cell periphery plasma membrane region cell projection membrane 9+0 non-motile cilium photoreceptor outer segment photoreceptor cell cilium protein-containing complex transmembrane transporter complex membrane protein complex transporter complex rod photoreceptor outer segment intracellular cyclic nucleotide activated cation channel complex cation channel complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, D	IPR005821	Ion transport domain	Domain
A, C, D	IPR000595	Cyclic nucleotide-binding domain	Domain
A, C, D	IPR032406	Cyclic nucleotide-gated channel, C-terminal leucine zipper domain	Domain
A, C, D	IPR014710	RmlC-like jelly roll fold	Homologous Superfamily
A, C, D	IPR018488	Cyclic nucleotide-binding, conserved site	Conserved Site
A, C, D	IPR050866	Cyclic nucleotide-gated cation channel	Family
A, C, D	IPR018490	Cyclic nucleotide-binding domain superfamily	Homologous Superfamily
B	IPR014710	RmlC-like jelly roll fold	Homologous Superfamily
B	IPR018488	Cyclic nucleotide-binding, conserved site	Conserved Site
B	IPR050866	Cyclic nucleotide-gated cation channel	Family
B	IPR000595	Cyclic nucleotide-binding domain	Domain
B	IPR018490	Cyclic nucleotide-binding domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, C, D	Pharos: P29973	retinitis pigmentosa retinitis pigmentosa 49 cone-rod dystrophy gout psoriasis uterine corpus leiomyoma Crohn disease interstitial cystitis retinal degeneration spina bifida cutaneous lupus erythematosus pituitary cancer ulcerative colitis
B	Pharos: Q14028	retinitis pigmentosa retinitis pigmentosa 45 chronic obstructive pulmonary disease retinal degeneration Sjogren syndrome cone-rod dystrophy psoriasis

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D	OPM	Transmembrane	Alpha-helical polytopic	Ion channel (VIC) superfamily	Cyclic nucleotide-gated ion channel

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

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.