Annotations: 8GN8

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	Glyco_hydro_43	e8gn8E1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
D [auth C]	Glyco_hydro_43	e8gn8C1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
C [auth B]	Glyco_hydro_43	e8gn8B1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
B [auth A]	Glyco_hydro_43	e8gn8A1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
A [auth D]	Glyco_hydro_43	e8gn8D1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth D], B [auth A], C [auth B], D [auth C], E	PF00029	Connexin (Connexin)	Connexin	Connexin proteins form gap-junctions between cells. They carry four transmembrane regions, hence why this family now includes Connexin_CCC, which represented the second pair of TMs.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth D], B [auth A], C [auth B], D [auth C], E	Gap junction delta-4 protein	wide pore channel activity passive transmembrane transporter activity channel activity transporter activity gap junction channel activity transmembrane transporter activity	multicellular organismal process tissue regeneration regulation of growth skeletal muscle tissue regeneration skeletal muscle satellite cell activation regulation of cellular process regulation of response to external stimulus response to stimulus regulation of developmental process developmental growth regulation of cell activation regeneration multicellular organism development satellite cell activation involved in skeletal muscle regeneration anatomical structure development multicellular organismal process tissue regeneration regulation of growth skeletal muscle tissue regeneration skeletal muscle satellite cell activation regulation of cellular process regulation of response to external stimulus response to stimulus regulation of developmental process developmental growth regulation of cell activation regeneration multicellular organism development satellite cell activation involved in skeletal muscle regeneration anatomical structure development regulation of multicellular organismal process developmental process regulation of biological process regulation of multicellular organismal development regulation of developmental growth biological regulation growth cell activation response to external stimulus regulation of satellite cell activation involved in skeletal muscle regeneration regulation of response to stimulus regulation of skeletal muscle tissue regeneration cellular process signaling cell-cell signaling cell communication	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth D], B [auth A], C [auth B], D [auth C], E	IPR038359	Connexin, N-terminal domain superfamily	Homologous Superfamily
A [auth D], B [auth A], C [auth B], D [auth C], E	IPR000500	Connexin	Family
A [auth D], B [auth A], C [auth B], D [auth C], E	IPR019570	Connexin, cysteine-rich domain	Domain
A [auth D], B [auth A], C [auth B], D [auth C], E	IPR017990	Connexin, conserved site	Conserved Site
A [auth D], B [auth A], C [auth B], D [auth C], E	IPR013092	Connexin, N-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth D], B [auth A], C [auth B], D [auth C], E	Pharos: Q96KN9	colorectal cancer eosinophilic esophagitis psoriasis

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

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.