2MPF

Solution structure human HCN2 CNBD in the cAMP-unbound state

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)
A	d2mpfa_	All beta proteins	Double-stranded beta-helix	cAMP-binding domain-like	cAMP-binding domain	automated matches	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)
A	SCOP2 Family	cNMP-binding domain	8088261	4000272	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	cAMP-binding domain-like	8088262	3000084	SCOP2 (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	cNMP_binding_1	e2mpfA1	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.10	Mainly Beta	Sandwich	Jelly Rolls	Jelly Rolls	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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	Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2	monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel activity inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel 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 voltage-gated sodium channel activity sodium channel activity sodium ion transmembrane transporter activity 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 intracellularly ligand-gated monoatomic ion 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 identical protein binding protein binding	transmembrane transport localization nitrogen compound transport transport ammonium transmembrane transport cellular process inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport membrane depolarization during action potential membrane depolarization biological regulation membrane depolarization during cardiac muscle cell action potential action potential transmembrane transport localization nitrogen compound transport transport ammonium transmembrane transport cellular process inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport membrane depolarization during action potential membrane depolarization biological regulation membrane depolarization during cardiac muscle cell action potential action potential regulation of biological quality cardiac muscle cell action potential regulation of membrane potential monoatomic ion transmembrane transport potassium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport monoatomic ion transport potassium ion transport monoatomic cation transport regulation of biological process signaling cell-cell signaling cell communication regulation of cellular process regulation of membrane depolarization cellular response to nitrogen compound cellular response to stimulus response to stimulus response to organophosphorus cellular response to organic cyclic compound response to oxygen-containing compound response to nitrogen compound response to purine-containing compound response to cAMP cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical cellular response to cAMP response to organic cyclic compound sodium ion transmembrane transport sodium ion transport import into cell import across plasma membrane sodium ion import across plasma membrane inorganic cation import across plasma membrane inorganic ion import across plasma membrane potassium ion import across plasma membrane cellular response to cGMP response to cGMP	cell periphery plasma membrane membrane cellular anatomical entity somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex potassium channel complex cell periphery plasma membrane membrane cellular anatomical entity somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex HCN channel complex axon

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR013621	Ion transport N-terminal	Domain
A	IPR014710	RmlC-like jelly roll fold	Homologous Superfamily
A	IPR018488	Cyclic nucleotide-binding, conserved site	Conserved Site
A	IPR005821	Ion transport domain	Domain
A	IPR051413	Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel	Family
A	IPR003938	Potassium channel, voltage-dependent, EAG/ELK/ERG-like	Family
A	IPR000595	Cyclic nucleotide-binding domain	Domain
A	IPR018490	Cyclic nucleotide-binding domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9UL51	adenoma atypical teratoid rhabdoid tumor Epileptic encephalopathy malignant ependymoma glioblastoma malignant glioma atrial fibrillation epilepsy large cell medulloblastoma medulloblastoma

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.