4ZSO | pdb_00004zso

Crystal structure of a complex between B7-H6, a tumor cell ligand for natural cytotoxicity receptor NKp30, and an inhibitory antibody

External Resource: Annotation

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

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4zsob1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d4zsob2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d4zsod1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d4zsod2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d4zsoa1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d4zsoc1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	CBS	e4zsoE1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle	H: Baseplate wedge protein gp7 helical domain	T: Baseplate wedge protein gp7 helical domain	F: CBS	ECOD (develop294)
F	ANAPC1	e4zsoF1	A: alpha bundles	X: omega toxin-like	H: omega toxin-related	T: omega toxin-related	F: ANAPC1	ECOD (develop294)
B	CBS	e4zsoB1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle	H: Baseplate wedge protein gp7 helical domain	T: Baseplate wedge protein gp7 helical domain	F: CBS	ECOD (develop294)
D	CBS	e4zsoD1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle	H: Baseplate wedge protein gp7 helical domain	T: Baseplate wedge protein gp7 helical domain	F: CBS	ECOD (develop294)
A	CBS	e4zsoA1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle	H: Baseplate wedge protein gp7 helical domain	T: Baseplate wedge protein gp7 helical domain	F: CBS	ECOD (develop294)
C	CBS	e4zsoC1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle	H: Baseplate wedge protein gp7 helical domain	T: Baseplate wedge protein gp7 helical domain	F: CBS	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
E, F	NCR3LG1 (Natural cytotoxicity triggering receptor 3 ligand 1,	1V-1C-LIKE	Homo sapiens (human)	NCR3LG1*01	V-LIKE-DOMAIN V-LIKE, C-LIKE-DOMAIN C-LIKE	RPI	1V-1C-LIKE	IMGT (202610-0)
B, D	B7H6)	VH-CH1	Homo sapiens (human)	IGHV1-1201, IGHJ401, IGHG2A01, IGHG2A02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2A_KAPPA	IMGT (202610-0)
A, C	B7H6)	L-KAPPA	Homo sapiens (human)	IGKV4-6801, IGKJ501, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2A_KAPPA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, D	Heavy Chain	IGHV1	-	natural cytotoxicity triggering receptor 3 ligand 1	SAbDab (2026-03-20)
A, C	Light Chain	IGKV4	Kappa	natural cytotoxicity triggering receptor 3 ligand 1	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E, F	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, F	Natural cytotoxicity triggering receptor 3 ligand 1	molecular function activator activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	multicellular organismal process T cell activation immune system process cell activation alpha-beta T cell activation cellular process lymphocyte activation NK T cell activation leukocyte activation	cell periphery cellular anatomical structure plasma membrane membrane
B, D	Antibody Heavy Chain	-	-	-
A, C	Antibody Light Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, F	IPR003597	Immunoglobulin C1-set	Domain
E, F	IPR050462	Retroviral Gag-Pol polyproteins	Family
E, F	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
E, F	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
E, F	IPR010999	Retroviral matrix protein	Homologous Superfamily
E, F	IPR036946	Gamma-retroviral matrix domain superfamily	Homologous Superfamily
E, F	IPR003599	Immunoglobulin domain subtype	Domain
E, F	IPR007110	Immunoglobulin-like domain	Domain
E, F	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E, F	Pharos: Q68D85	psoriasis

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.