Annotations: 8D1F

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth C]	PF01062	e8d1fC1	A: alpha bundles	X: Bestrophin (From Topology)	H: Bestrophin (From Topology)	T: Bestrophin	F: PF01062	ECOD (1.6)
B [auth E]	PF01062	e8d1fE1	A: alpha bundles	X: Bestrophin (From Topology)	H: Bestrophin (From Topology)	T: Bestrophin	F: PF01062	ECOD (1.6)
C [auth A]	PF01062	e8d1fA1	A: alpha bundles	X: Bestrophin (From Topology)	H: Bestrophin (From Topology)	T: Bestrophin	F: PF01062	ECOD (1.6)
D	PF01062	e8d1fD1	A: alpha bundles	X: Bestrophin (From Topology)	H: Bestrophin (From Topology)	T: Bestrophin	F: PF01062	ECOD (1.6)
E [auth B]	PF01062	e8d1fB1	A: alpha bundles	X: Bestrophin (From Topology)	H: Bestrophin (From Topology)	T: Bestrophin	F: PF01062	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C], B [auth E], C [auth A], D, E [auth B]	PF01062	Bestrophin, RFP-TM, chloride channel (Bestrophin)	Bestrophin, RFP-TM, chloride channel	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C], B [auth E], C [auth A], D, E [auth B]	Bestrophin-2	monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity monoatomic ion channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity monoatomic anion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity inorganic anion transmembrane transporter activity chloride channel activity	membrane depolarization biological regulation regulation of biological quality regulation of membrane potential multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of smell	protein-containing complex transmembrane transporter complex membrane chloride channel complex membrane protein complex cellular anatomical entity transporter complex monoatomic ion channel complex membrane-bounded organelle cell projection organelle cilium plasma membrane bounded cell projection cell periphery protein-containing complex transmembrane transporter complex membrane chloride channel complex membrane protein complex cellular anatomical entity transporter complex monoatomic ion channel complex membrane-bounded organelle cell projection organelle cilium plasma membrane bounded cell projection cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C], B [auth E], C [auth A], D, E [auth B]	IPR021134	Bestrophin-like	Family
A [auth C], B [auth E], C [auth A], D, E [auth B]	IPR000615	Bestrophin	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth C], B [auth E], C [auth A], D, E [auth B]	Pharos: Q8NFU1	chromosome 19p13.13 deletion syndrome psoriasis cystic fibrosis ulcerative colitis large cell medulloblastoma vitelliform macular dystrophy

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth C], B [auth E], C [auth A], D, E [auth B]	OPM				Bestrophin anion channel

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth C], B [auth E], C [auth A], D, E [auth B]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth C], B [auth E], C [auth A], D, E [auth B]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Other Ion Channels	Bestrophin-2 (BEST2) Ca²⁺-activated Cl− channel, 1uM Ca²⁺, closed state

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.