4OQT | pdb_00004oqt

LINGO-1/Li81 Fab complex

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Thera-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)
C [auth H]	RBM39linker	e4oqtH1	A: a/b three-layered sandwiches	X: Histone-like	H: Histone-related	T: AAA+ ATPase lid domain	F: RBM39linker	ECOD (v294.1)
B [auth L]	RBM39linker	e4oqtL1	A: a/b three-layered sandwiches	X: Histone-like	H: Histone-related	T: AAA+ ATPase lid domain	F: RBM39linker	ECOD (v294.1)
A	PDH_E1_M	e4oqtA1	A: a/b three-layered sandwiches	X: Thioredoxin-like	H: Thioredoxin-like	T: Thioredoxin-like	F: PDH_E1_M	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth H]	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)
A	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
A	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
C [auth H]	Li81 Fab	VH-CH1	Homo sapiens (human)	IGHV3-2301, IGHV3-23D01, IGHJ302, IGHG101, IGHG102, IGHG104	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202611-0)
B [auth L]	Li81 Fab	L-KAPPA	Homo sapiens (human)	IGKV3-1101, IGKJ201, IGKC*01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202611-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV3	-	leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein 1	SAbDab (2026-03-27)
B [auth L]	Light Chain	IGKV3	Kappa	leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein 1	SAbDab (2026-03-27)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

Chain	Name	Target	Provenance Source
C [auth H]	Opicinumab	LINGO1	Therapeutic SAbDab (2026-03-27)
B [auth L]	Opicinumab	LINGO1	Therapeutic SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF13855	Leucine rich repeat (LRR_8)	Leucine rich repeat	-	Repeat
A	PF07679	Immunoglobulin I-set domain (I-set)	Immunoglobulin I-set domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth H]	Heavy Chain of Li81 Fab, VH3-23	-	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
B [auth L]	Light Chain of Li81 Fab, kappa 3	-	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
A	Leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein 1	molecular transducer activity signaling receptor activity epidermal growth factor receptor binding protein binding binding signaling receptor binding growth factor receptor binding	developmental process multicellular organismal process cellular developmental process cell development nervous system development generation of neurons neurogenesis multicellular organism development neuron differentiation cell differentiation neuron development anatomical structure development cellular process system development	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth H]	IPR003597	Immunoglobulin C1-set	Domain
C [auth H]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C [auth H]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
C [auth H]	IPR013106	Immunoglobulin V-set domain	Domain
C [auth H]	IPR003599	Immunoglobulin domain subtype	Domain
C [auth H]	IPR007110	Immunoglobulin-like domain	Domain
C [auth H]	IPR050380	Immune Recognition and Response Modulators	Family
C [auth H]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B [auth L]	IPR003597	Immunoglobulin C1-set	Domain
B [auth L]	IPR050150	Immunoglobulin Variable Light Chain	Family
B [auth L]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth L]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth L]	IPR013106	Immunoglobulin V-set domain	Domain
B [auth L]	IPR003599	Immunoglobulin domain subtype	Domain
B [auth L]	IPR007110	Immunoglobulin-like domain	Domain
B [auth L]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A	IPR000372	Leucine-rich repeat N-terminal domain	Domain
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR003598	Immunoglobulin subtype 2	Domain
A	IPR001611	Leucine-rich repeat	Repeat
A	IPR050541	Leucine-rich repeat and transmembrane domain-containing protein	Family
A	IPR003591	Leucine-rich repeat, typical subtype	Repeat
A	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR003599	Immunoglobulin domain subtype	Domain
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR013098	Immunoglobulin I-set	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q96FE5	essential tremor astrocytic tumor breast cancer Familial Tremor large cell medulloblastoma medulloblastoma attention deficit hyperactivity disorder, inattentive type endogenous depression glioblastoma malignant ependymoma atypical teratoid rhabdoid tumor invasive ductal breast carcinoma malignant glioma