Annotations: 3RIA

C. elegans glutamate-gated chloride channel (GluCl) in complex with Fab, ivermectin and iodide.

External Resource: Annotation

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
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PQQ_2	e3riaB1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
D	PQQ_2	e3riaD1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
E	PQQ_2	e3riaE1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
C	PQQ_2	e3riaC1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
A	PQQ_2	e3riaA1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
K	PQQ_2	e3riaK1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
M	PQQ_2	e3riaM1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
N	zf-CCCH	e3riaN1	A: alpha arrays	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: zf-CCCH	ECOD (v295.2)
N	VWA	e3riaN2	A: alpha arrays	X: DP domain	H: DP domain	T: DP domain	F: VWA	ECOD (v295.2)
O	Glyco_hydro_2	e3riaO5	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Glyco_hydro_2	ECOD (v295.2)
L	PQQ_2	e3riaL1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PQQ_2	ECOD (v295.2)
I	IL6Ra-bind	e3riaI3	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: IL6Ra-bind	ECOD (v295.2)
J	Cadherin	e3riaJ3	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Cadherin	ECOD (v295.2)
H	Cadherin	e3riaH3	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Cadherin	ECOD (v295.2)
G	BT_3987-like_N	e3riaG3	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: BT_3987-like_N	ECOD (v295.2)
F	BT_3987-like_N	e3riaF3	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: BT_3987-like_N	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
B	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
D	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
D	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
E	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
E	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
C	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
C	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
A	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
A	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
K	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
M	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
N	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
O	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
L	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
I	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
J	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
H	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G	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)

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
K, L, M, N, O	Mouse mAb Fab	L-LAMBDA	Mus musculus (house mouse)	IGLV101, IGLJ101, IGLC1*01	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202632-0)
F, G, H, I, J	Mouse mAb Fab	VH-CH1	Mus musculus (house mouse)	IGHV1-3701, IGHV1-2601, IGHJ201, IGHG102	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202632-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
K, L, M, N, O	Light Chain	IGLV1	Lambda	avermectin-sensitive glutamate-gated chloride channel gluclalpha	SAbDab (2026-08-21)
F, G, H, I, J	Heavy Chain	IGHV1	-	avermectin-sensitive glutamate-gated chloride channel gluclalpha	SAbDab (2026-08-21)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
F, G, H, I, J	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
A, B, C, D, E	Avermectin-sensitive glutamate-gated chloride channel GluCl alpha	-	-	-
K, L, M, N, O	Mouse monoclonal Fab fragment, light chain	-	-	-
F, G, H, I, J	Mouse monoclonal Fab fragment, heavy chain	-	-	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
K, L, M, N, O	IPR003597	Immunoglobulin C1-set	Domain
K, L, M, N, O	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
K, L, M, N, O	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
K, L, M, N, O	IPR013106	Immunoglobulin V-set domain	Domain
K, L, M, N, O	IPR003599	Immunoglobulin domain subtype	Domain
K, L, M, N, O	IPR007110	Immunoglobulin-like domain	Domain
K, L, M, N, O	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
K, L, M, N, O	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
F, G, H, I, J	IPR003597	Immunoglobulin C1-set	Domain
F, G, H, I, J	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
F, G, H, I, J	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
F, G, H, I, J	IPR007110	Immunoglobulin-like domain	Domain
F, G, H, I, J	IPR050380	Immune Recognition and Response Modulators	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
K, L, M, N, O	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
K, L, M, N, O	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
K, L, M, N, O	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Cys-Loop Receptor Family	GluClα anion-selective receptor (Fab-invermectin complex)

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

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.

3RIA | pdb_00003ria