Annotations: 4QHK

UCA (unbound) from CH103 Lineage

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
H [auth P]	zf-CCHC	e4qhkP1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
G [auth L]	zf-CCHC	e4qhkL1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
F [auth J]	zf-CCHC	e4qhkJ1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
E [auth N]	zf-CCHC	e4qhkN1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
D [auth K]	zf-CCHC	e4qhkK1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
C [auth O]	zf-CCHC	e4qhkO1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
B [auth I]	zf-CCHC	e4qhkI1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)
A [auth M]	zf-CCHC	e4qhkM1	A: alpha arrays	X: Cysteine proteinases-like	H: SH3	T: SH3	F: zf-CCHC	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
H [auth P]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F [auth J]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E [auth N]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth K]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth O]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B [auth I]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [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
E [auth N], F [auth J], G [auth L], H [auth P]	UCA	L-LAMBDA	Homo sapiens (human)	IGLV3-101, IGLJ101, IGLC201, IGLC202, IGLC3*04	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202624-0)
A [auth M], B [auth I], C [auth O], D [auth K]	UCA	VH-CH1	Homo sapiens (human)	IGHV4-5901, IGHV4-5903, IGHV4-5908, IGHJ401, IGHJ402, IGHJ403, IGHG1*03	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202624-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E [auth N], F [auth J], G [auth L], H [auth P]	Light Chain	IGLV3	Lambda	-	SAbDab (2026-06-26)
A [auth M], B [auth I], C [auth O], D [auth K]	Heavy Chain	IGHV4	-	-	SAbDab (2026-06-26)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth N], F [auth J], G [auth L], H [auth P]	UCA light chain	-	-	-
A [auth M], B [auth I], C [auth O], D [auth K]	UCA heavy chain	-	response to stimulus immune response immune system process adaptive immune response	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex immunoglobulin complex extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

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

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