7RD5 | pdb_00007rd5

Crystal structure of Tspan15 large extracellular loop (Tspan15 LEL) in complex with 1C12 Fab

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth E]	F_UNCLASSIFIED	e7rd5E1	A: few secondary structure elements	X: Tetraspanin extracellular domain (From Topology)	H: Tetraspanin extracellular domain (From Topology)	T: Tetraspanin extracellular domain	F: F_UNCLASSIFIED	ECOD (1.6)
C [auth F]	F_UNCLASSIFIED	e7rd5F1	A: few secondary structure elements	X: Tetraspanin extracellular domain (From Topology)	H: Tetraspanin extracellular domain (From Topology)	T: Tetraspanin extracellular domain	F: F_UNCLASSIFIED	ECOD (1.6)
E [auth D]	V-set_8	e7rd5D1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
E [auth D]	C1-set_1	e7rd5D2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
B	V-set_8	e7rd5B1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
B	C1-set_1	e7rd5B2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
A	C1-set_4	e7rd5A2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_4	ECOD (1.6)
A	V-set	e7rd5A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set	ECOD (1.6)
D [auth C]	C1-set_4	e7rd5C2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_4	ECOD (1.6)
D [auth C]	V-set	e7rd5C1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth F]	1.10.1450.10	Mainly Alpha	Orthogonal Bundle	Cd81 Antigen, Extracellular Domain	Chain: A	CATH (utative)
E [auth D]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, E [auth D]	Heavy Chain	IGHV1	-	tetraspanin-15	SAbDab (2025-12-19)
A, D [auth C]	Light Chain	IGKV15	Kappa	tetraspanin-15	SAbDab (2025-12-19)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth F], F [auth E]	PF00335	Tetraspanin family (Tetraspanin)	Tetraspanin family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth F], F [auth E]	Tetraspanin-15	protein binding binding enzyme binding	biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation regulation of membrane protein ectodomain proteolysis regulation of biological process regulation of cellular process catabolic process regulation of protein metabolic process biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation regulation of membrane protein ectodomain proteolysis regulation of biological process regulation of cellular process catabolic process regulation of protein metabolic process biological regulation regulation of macromolecule metabolic process protein catabolic process regulation of catabolic process macromolecule catabolic process regulation of primary metabolic process regulation of proteolysis proteolysis membrane protein proteolysis regulation of metabolic process regulation of protein catabolic process membrane protein ectodomain proteolysis localization protein localization to cell periphery cellular localization protein localization to plasma membrane macromolecule localization intracellular protein localization localization within membrane protein localization to membrane cellular response to stimulus response to stimulus negative regulation of signaling signaling negative regulation of biological process regulation of signal transduction negative regulation of cell communication cell communication negative regulation of cellular process signal transduction regulation of signaling cell surface receptor signaling pathway negative regulation of response to stimulus negative regulation of signal transduction Notch signaling pathway negative regulation of Notch signaling pathway regulation of response to stimulus regulation of Notch signaling pathway regulation of cell communication	cellular anatomical structure cell junction membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen organelle endoplasmic reticulum cytoplasm cellular anatomical structure cell junction membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen organelle endoplasmic reticulum cytoplasm cell surface cytosol cell periphery plasma membrane membrane endosome membrane endosome intracellular vesicle late endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane late endosome vesicle organelle membrane nucleus intracellular membraneless organelle nuclear body nucleoplasm membraneless organelle nuclear lumen tetraspanin-enriched microdomain
B, E [auth D]	1C12 Fab Heavy Chain	-	-	-
A, D [auth C]	1C12 Fab Light Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth F], F [auth E]	IPR008952	Tetraspanin, EC2 domain superfamily	Homologous Superfamily
C [auth F], F [auth E]	IPR000301	Tetraspanin, animals	Family
C [auth F], F [auth E]	IPR018499	Tetraspanin/Peripherin	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C [auth F], F [auth E]	Pharos: O95858	malignant pancreatic neoplasm MALT lymphoma vascular disease

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.