Annotations: 1XGY

Crystal Structure of Anti-Meta I Rhodopsin Fab Fragment K42-41L

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth H]	d1xgyh1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Immunoglobulin heavy chain gamma constant domain 1, CH1-gamma	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
D [auth I]	d1xgyi1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Immunoglobulin heavy chain gamma constant domain 1, CH1-gamma	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth H]	Copper-bind	e1xgyH1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.2)
B [auth H]	Sigma_1_2	e1xgyH2	A: beta barrels	X: Globin-like	H: Globin-like	T: Globin-like	F: Sigma_1_2	ECOD (v294.2)
D [auth I]	Copper-bind	e1xgyI1	A: beta barrels	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.2)
D [auth I]	Sigma_1_2	e1xgyI2	A: beta barrels	X: HTH	H: Nudix	T: winged helix domain	F: Sigma_1_2	ECOD (v294.2)
A [auth L]	Sigma_1_2	e1xgyL1	A: beta barrels	X: Globin-like	H: Globin-like	T: Globin-like	F: Sigma_1_2	ECOD (v294.2)
C [auth M]	Sigma_1_2	e1xgyM1	A: beta barrels	X: HTH	H: Nudix	T: winged helix domain	F: Sigma_1_2	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth I]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth M]	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 H], D [auth I]	K42-41L	VH-CH1	Mus musculus (house mouse)	IGHV1-7501, IGHV1-8401, IGHJ201, IGHG102	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202617-0)
A [auth L], C [auth M]	K42-41L	L-KAPPA	Mus musculus (house mouse)	IGKV2-10904, IGKV2-10903, IGKJ501, IGKC01, IGKC*02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202617-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth H], D [auth I]	Heavy Chain	IGHV1	-	rhodopsin epitope mimetic peptide	SAbDab (2026-05-08)
A [auth L], C [auth M]	Light Chain	IGKV2	Kappa	rhodopsin epitope mimetic peptide	SAbDab (2026-05-08)

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth H], D [auth I]	IPR003597	Immunoglobulin C1-set	Domain
B [auth H], D [auth I]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth H], D [auth I]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth H], D [auth I]	IPR013106	Immunoglobulin V-set domain	Domain
B [auth H], D [auth I]	IPR003599	Immunoglobulin domain subtype	Domain
B [auth H], D [auth I]	IPR007110	Immunoglobulin-like domain	Domain
B [auth H], D [auth I]	IPR050380	Immune Recognition and Response Modulators	Family
B [auth H], D [auth I]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

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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.