Annotations: 7QER

human Connexin 26 dodecamer at 55mm Hg PCO2, pH7.4

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
L	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Claudin-like	8092543	3002606	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
L	VEGFR-1-like_Ig-like	e7qerL1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
K	VEGFR-1-like_Ig-like	e7qerK1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
J	VEGFR-1-like_Ig-like	e7qerJ1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
I	VEGFR-1-like_Ig-like	e7qerI1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
H	VEGFR-1-like_Ig-like	e7qerH1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
G	VEGFR-1-like_Ig-like	e7qerG1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
F	VEGFR-1-like_Ig-like	e7qerF1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
E	VEGFR-1-like_Ig-like	e7qerE1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
D	VEGFR-1-like_Ig-like	e7qerD1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
C	VEGFR-1-like_Ig-like	e7qerC1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
B	VEGFR-1-like_Ig-like	e7qerB1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)
A	VEGFR-1-like_Ig-like	e7qerA1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: VEGFR-1-like_Ig-like	ECOD (v295)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	Gap junction beta-2 protein	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding wide pore channel activity passive transmembrane transporter activity channel activity transporter activity gap junction channel activity involved in cell communication by electrical coupling gap junction channel activity transmembrane transporter activity identical protein binding cation binding ion binding binding calcium ion binding metal ion binding small molecule binding wide pore channel activity passive transmembrane transporter activity channel activity transporter activity gap junction channel activity involved in cell communication by electrical coupling gap junction channel activity transmembrane transporter activity identical protein binding protein binding	cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly gap junction assembly cellular process cellular component organization or biogenesis cell-cell junction assembly cell-cell junction organization multicellular organismal process system process sensory perception nervous system process cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly gap junction assembly cellular process cellular component organization or biogenesis cell-cell junction assembly cell-cell junction organization multicellular organismal process system process sensory perception nervous system process sensory perception of sound sensory perception of mechanical stimulus developmental process ear development sensory organ development inner ear development anatomical structure development animal organ development animal gross anatomical part developmental process gap junction-mediated intercellular transport localization intercellular transport transport establishment of localization regulation of biological process signaling biological regulation cell-cell signaling cell communication transmembrane transport	cell-cell junction protein-containing complex anchoring junction plasma membrane protein complex gap junction membrane plasma membrane membrane protein complex cell periphery cellular anatomical structure cell junction connexin complex membrane-bounded organelle intracellular organelle cell-cell junction protein-containing complex anchoring junction plasma membrane protein complex gap junction membrane plasma membrane membrane protein complex cell periphery cellular anatomical structure cell junction connexin complex membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle endoplasmic reticulum-Golgi intermediate compartment cytoplasm intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR038359	Connexin, N-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR000500	Connexin	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR019570	Connexin, cysteine-rich domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR002268	Connexin 26	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR013092	Connexin, N-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR017990	Connexin, conserved site	Conserved Site

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, G, H, I, J, K, L	OPM	Transmembrane	Alpha-helical polytopic	Tetraspan junctional complexes	Connexin

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	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, G, H, I, J, K, L	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, G, H, I, J, K, L	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Gap Junctions and Related Channels	Connexin 26, dodecamer at pH7.4, 20mmHg PCO₂

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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.