Annotations: 5GGU

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D [auth B]	Asp	e5gguB1	A: alpha bundles	X: Type II ABC importer transmembrane domain fold	H: DNA mismatch repair protein MutL regulatory subdomain	T: DNA mismatch repair protein MutL regulatory subdomain	F: Asp	ECOD (develop294)
B [auth L]	Asp	e5gguL1	A: alpha bundles	X: Type II ABC importer transmembrane domain fold	H: DNA mismatch repair protein MutL regulatory subdomain	T: DNA mismatch repair protein MutL regulatory subdomain	F: Asp	ECOD (develop294)
C [auth A]	Asp	e5gguA1	A: alpha bundles	X: Type II ABC importer transmembrane domain fold	H: DNA mismatch repair protein MutL regulatory subdomain	T: DNA mismatch repair protein MutL regulatory subdomain	F: Asp	ECOD (develop294)
A [auth H]	Asp	e5gguH1	A: alpha bundles	X: Type II ABC importer transmembrane domain fold	H: DNA mismatch repair protein MutL regulatory subdomain	T: DNA mismatch repair protein MutL regulatory subdomain	F: Asp	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D [auth B]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth A]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [auth H]	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
B [auth L], D [auth B]	Tremelimumab Fab	L-KAPPA	Homo sapiens (human)	IGKV1-3901, IGKV1D-3901, IGKJ301, IGKJ1S201, IGKC*01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202610-0)
A [auth H], C [auth A]	Tremelimumab Fab	VH-CH1	Homo sapiens (human)	IGHV3-3301, IGHV3-3304, IGHJ601, IGHJ602, IGHG101, IGHG102, IGHG104, IGHG105	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L], D [auth B]	Light Chain	IGKV1	Kappa	-	SAbDab (2026-03-20)
A [auth H], C [auth A]	Heavy Chain	IGHV3	-	-	SAbDab (2026-03-20)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

Chain	Name	Target	Provenance Source
B [auth L], D [auth B]	Volrustomig	CTLA4/CD152, PDCD1/CD279/PD1	Therapeutic SAbDab (2026-03-20)
A [auth H], C [auth A]	Volrustomig	CTLA4/CD152, PDCD1/CD279/PD1	Therapeutic SAbDab (2026-03-20)

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.