Annotations: 7XA9

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	F_UNCLASSIFIED	e7xa9B1	A: alpha complex topology	X: Clc chloride channel (From Topology)	H: Clc chloride channel (From Topology)	T: Clc chloride channel	F: F_UNCLASSIFIED	ECOD (1.6)
B	F_UNCLASSIFIED	e7xa9B2	A: a+b duplicates or obligate multimers	X: CBS-domain (From Topology)	H: CBS-domain (From Topology)	T: CBS-domain	F: F_UNCLASSIFIED	ECOD (1.6)
A	F_UNCLASSIFIED	e7xa9A1	A: alpha complex topology	X: Clc chloride channel (From Topology)	H: Clc chloride channel (From Topology)	T: Clc chloride channel	F: F_UNCLASSIFIED	ECOD (1.6)
A	F_UNCLASSIFIED	e7xa9A2	A: a+b duplicates or obligate multimers	X: CBS-domain (From Topology)	H: CBS-domain (From Topology)	T: CBS-domain	F: F_UNCLASSIFIED	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00571	CBS domain (CBS)	CBS domain	CBS domains are small intracellular modules that pair together to form a stable globular domain [2]. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain [6]. CBS domains have been shown to bind ligands ...	CBS domains are small intracellular modules that pair together to form a stable globular domain [2]. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain [6]. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet [5]. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet [4]. CBS domain pairs from AMPK bind AMP or ATP [5]. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP [5].	Domain
A, B	PF00654	Voltage gated chloride channel (Voltage_CLC)	Voltage gated chloride channel	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Chloride channel protein CLC-a	voltage-gated chloride channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity gated channel activity monoatomic ion channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity voltage-gated monoatomic anion channel activity passive transmembrane transporter activity channel activity monoatomic anion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity voltage-gated chloride channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity gated channel activity monoatomic ion channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity voltage-gated monoatomic anion channel activity passive transmembrane transporter activity channel activity monoatomic anion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity chloride channel activity nitrate transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity solute:monoatomic cation symporter activity nitrate:proton symporter activity secondary active transmembrane transporter activity active transmembrane transporter activity solute:proton symporter activity high-affinity secondary active nitrite transmembrane transporter activity symporter activity	localization transport monoatomic anion transport monoatomic ion transport chloride transport establishment of localization inorganic anion transport transmembrane transport nitrogen compound transport nitrate transmembrane transport cellular process nitrate import response to nitrate response to stimulus localization transport monoatomic anion transport monoatomic ion transport chloride transport establishment of localization inorganic anion transport transmembrane transport nitrogen compound transport nitrate transmembrane transport cellular process nitrate import response to nitrate response to stimulus response to chemical response to oxygen-containing compound response to nitrogen compound	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex membrane-bounded organelle vacuolar membrane plant-type vacuole membrane intracellular anatomical structure vacuole intracellular membrane-bounded organelle protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex membrane-bounded organelle vacuolar membrane plant-type vacuole membrane intracellular anatomical structure vacuole intracellular membrane-bounded organelle intracellular organelle bounding membrane of organelle organelle plant-type vacuole cytoplasm organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR046342	CBS domain superfamily	Homologous Superfamily
A, B	IPR001807	Chloride channel	Family
A, B	IPR014743	Chloride channel, core	Homologous Superfamily
A, B	IPR000644	CBS domain	Domain
A, B	IPR002251	Chloride channel ClC-plant	Family
A, B	IPR051280	Voltage-gated chloride channel/antiporter	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Transmembrane	Alpha-helical polytopic	Chloride transporter (ClC)	Chloride transporter

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	H⁺/Cl^- or F^- Exchange Transporters	CLCa-type 2NO₃⁻/1H⁺ antiporter

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.