8B41

Structure of heteromeric LRRC8A/C (1:1 co-transfected) Volume-Regulated Anion Channel in complex with synthetic nanobody Sb1

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF13855	e8b41A1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: PF13855	ECOD (1.6)
A	PF12534	e8b41A2	A: alpha bundles	X: Connexin 26 (From Topology)	H: Connexin 26 (From Topology)	T: Connexin 26	F: PF12534	ECOD (1.6)
B	PF13855	e8b41B2	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: PF13855	ECOD (1.6)
B	PF12534	e8b41B1	A: alpha bundles	X: Connexin 26 (From Topology)	H: Connexin 26 (From Topology)	T: Connexin 26	F: PF12534	ECOD (1.6)
C	PF13855	e8b41C1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: PF13855	ECOD (1.6)
C	PF12534	e8b41C2	A: alpha bundles	X: Connexin 26 (From Topology)	H: Connexin 26 (From Topology)	T: Connexin 26	F: PF12534	ECOD (1.6)
D	PF13855	e8b41D1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: PF13855	ECOD (1.6)
D	PF12534	e8b41D2	A: alpha bundles	X: Connexin 26 (From Topology)	H: Connexin 26 (From Topology)	T: Connexin 26	F: PF12534	ECOD (1.6)
E	PF12534	e8b41E1	A: alpha bundles	X: Connexin 26 (From Topology)	H: Connexin 26 (From Topology)	T: Connexin 26	F: PF12534	ECOD (1.6)
F	PF12534	e8b41F1	A: alpha bundles	X: Connexin 26 (From Topology)	H: Connexin 26 (From Topology)	T: Connexin 26	F: PF12534	ECOD (1.6)
G	PF07686	e8b41G1	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)
H	PF07686	e8b41H1	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)
I	PF07686	e8b41I1	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)
J	PF07686	e8b41J1	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
G, H, I, J	Heavy Chain	IGHV1	-	volume-regulated anion channel subunit lrrc8a	SAbDab (2024-07-12)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF13855	Leucine rich repeat (LRR_8)	Leucine rich repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Volume-regulated anion channel subunit LRRC8A	volume-sensitive anion channel activity monoatomic anion transmembrane transporter activity passive transmembrane transporter activity monoatomic ion channel activity channel activity monoatomic anion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity nucleotide transmembrane transporter activity guanine nucleotide transmembrane transporter activity purine ribonucleotide transmembrane transporter activity adenine nucleotide transmembrane transporter activity purine nucleotide transmembrane transporter activity volume-sensitive anion channel activity monoatomic anion transmembrane transporter activity passive transmembrane transporter activity monoatomic ion channel activity channel activity monoatomic anion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity nucleotide transmembrane transporter activity guanine nucleotide transmembrane transporter activity purine ribonucleotide transmembrane transporter activity adenine nucleotide transmembrane transporter activity purine nucleotide transmembrane transporter activity carbohydrate derivative transmembrane transporter activity nucleobase-containing compound transmembrane transporter activity cyclic-GMP-AMP transmembrane transporter activity organophosphate ester transmembrane transporter activity organic anion transmembrane transporter activity identical protein binding protein binding binding	developmental process spermatogenesis sexual reproduction reproductive process multicellular organismal reproductive process developmental process involved in reproduction male gamete generation gamete generation cellular homeostasis chemical homeostasis homeostatic process glucose homeostasis carbohydrate homeostasis intracellular chemical homeostasis developmental process spermatogenesis sexual reproduction reproductive process multicellular organismal reproductive process developmental process involved in reproduction male gamete generation gamete generation cellular homeostasis chemical homeostasis homeostatic process glucose homeostasis carbohydrate homeostasis intracellular chemical homeostasis intracellular glucose homeostasis regulation of biological process regulation of cellular process regulation of developmental process cellular developmental process biological regulation positive regulation of biological process regulation of cell differentiation positive regulation of myoblast differentiation muscle structure development positive regulation of developmental process positive regulation of cell differentiation cell differentiation anatomical structure development regulation of myoblast differentiation cellular process myoblast differentiation positive regulation of cellular process transport monoatomic ion transmembrane transport inorganic ion transmembrane transport inorganic anion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport inorganic anion transport cellular component organization cellular component biogenesis protein hexamerization cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular component organization or biogenesis regulation of cellular component size cell volume homeostasis regulation of biological quality regulation of cell size regulation of anatomical structure size multicellular organismal process immature B cell differentiation hemopoiesis B cell activation cell activation cell development mononuclear cell differentiation pre-B cell differentiation lymphocyte differentiation lymphocyte activation leukocyte activation B cell differentiation immune system process leukocyte differentiation organic acid transmembrane transport organic anion transport nitrogen compound transport carboxylic acid transport carboxylic acid transmembrane transport aspartate transmembrane transport amino acid transmembrane transport C4-dicarboxylate transport organic acid transport amino acid transport dicarboxylic acid transport import into cell guanine nucleotide transmembrane transport nucleotide transport purine ribonucleotide transport import across plasma membrane carbohydrate derivative transport purine nucleotide transport adenine nucleotide transport nucleotide transmembrane transport cyclic-GMP-AMP transmembrane import across plasma membrane guanine nucleotide transport cyclic nucleotide transport nucleobase-containing compound transport organophosphate ester transport purine-containing compound transmembrane transport protein localization positive regulation of cell communication regulation of localization establishment of protein localization positive regulation of establishment of protein localization cell communication cellular macromolecule localization positive regulation of insulin secretion regulation of peptide hormone secretion regulation of hormone levels positive regulation of peptide hormone secretion establishment of protein localization to extracellular region protein secretion regulation of protein secretion regulation of secretion positive regulation of protein localization cellular localization regulation of hormone secretion regulation of protein localization regulation of peptide secretion signaling positive regulation of secretion by cell hormone secretion protein localization to extracellular region positive regulation of protein transport peptide secretion secretion by cell regulation of secretion by cell positive regulation of hormone secretion positive regulation of secretion amide transport signal release positive regulation of peptide secretion regulation of signaling secretion regulation of transport regulation of peptide transport regulation of establishment of protein localization cell-cell signaling export from cell regulation of protein transport positive regulation of protein secretion peptide transport positive regulation of transport protein transport regulation of cellular localization regulation of insulin secretion peptide hormone secretion macromolecule localization hormone transport regulation of cell communication insulin secretion positive regulation of signaling response to osmotic stress response to stimulus response to stress response to abiotic stimulus taurine transmembrane transport alkanesulfonate transmembrane transport sulfur compound transport	cell surface cellular anatomical entity cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm vacuolar membrane membrane-bounded organelle lytic vacuole vacuole intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane cell surface cellular anatomical entity cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm vacuolar membrane membrane-bounded organelle lytic vacuole vacuole intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane organelle membrane lysosome protein-containing complex transmembrane transporter complex membrane protein complex transporter complex monoatomic ion channel complex
E, F	Volume-regulated anion channel subunit LRRC8C	volume-sensitive anion channel activity monoatomic anion transmembrane transporter activity passive transmembrane transporter activity monoatomic ion channel activity channel activity monoatomic anion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity	developmental process fat cell differentiation cellular developmental process cell differentiation cellular process cellular component organization cellular component biogenesis protein hexamerization cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular component organization or biogenesis cellular response to stimulus developmental process fat cell differentiation cellular developmental process cell differentiation cellular process cellular component organization cellular component biogenesis protein hexamerization cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular component organization or biogenesis cellular response to stimulus response to osmotic stress response to stimulus cellular response to chemical stress cellular response to osmotic stress cellular response to environmental stimulus cellular response to chemical stimulus cellular response to stress response to stress response to chemical response to abiotic stimulus cellular response to abiotic stimulus import into cell nitrogen compound transport guanine nucleotide transmembrane transport organic anion transport nucleotide transport transport purine ribonucleotide transport import across plasma membrane carbohydrate derivative transport establishment of localization purine nucleotide transport transmembrane transport adenine nucleotide transport localization nucleotide transmembrane transport cyclic-GMP-AMP transmembrane import across plasma membrane guanine nucleotide transport cyclic nucleotide transport nucleobase-containing compound transport organophosphate ester transport purine-containing compound transmembrane transport organic acid transmembrane transport carboxylic acid transport carboxylic acid transmembrane transport aspartate transmembrane transport amino acid transmembrane transport C4-dicarboxylate transport organic acid transport amino acid transport dicarboxylic acid transport monoatomic ion transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport taurine transmembrane transport alkanesulfonate transmembrane transport sulfur compound transport	cell periphery plasma membrane membrane cellular anatomical entity intracellular anatomical structure cytoplasm protein-containing complex transmembrane transporter complex membrane protein complex transporter complex monoatomic ion channel complex membrane-bounded organelle intracellular organelle organelle cell periphery plasma membrane membrane cellular anatomical entity intracellular anatomical structure cytoplasm protein-containing complex transmembrane transporter complex membrane protein complex transporter complex monoatomic ion channel complex membrane-bounded organelle intracellular organelle organelle endoplasmic reticulum intracellular membrane-bounded organelle endomembrane system organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network organelle membrane endoplasmic reticulum membrane
G, H, I, J	Synthetic nanobody Sb1	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR003591	Leucine-rich repeat, typical subtype	Repeat
A, B, C, D	IPR001611	Leucine-rich repeat	Repeat
A, B, C, D	IPR021040	LRRC8, pannexin-like TM region	Domain
A, B, C, D	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
E, F	IPR001611	Leucine-rich repeat	Repeat
E, F	IPR021040	LRRC8, pannexin-like TM region	Domain
E, F	IPR003591	Leucine-rich repeat, typical subtype	Repeat
E, F	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F	OPM	Transmembrane	Alpha-helical polytopic	Tetraspan junctional complexes	Pannexin

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Other Ion Channels	LRRC8C Volume-Regulated Anion Channel, homomeric

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.