8DJG | pdb_00008djg

ADGRL3-lectin domain in complex with an activating synthetic antibody fragment

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2B Superfamily	Sea urchin egg lectin (SUEL)-like	8052987	3002155	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Sea urchin egg lectin (SUEL)-like	8052987	3002155	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	Carb_anhydrase	e8djgE1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Carb_anhydrase	ECOD (v294.1)
F	Carb_anhydrase	e8djgF1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Carb_anhydrase	ECOD (v294.1)
B	Carb_anhydrase	e8djgB1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Carb_anhydrase	ECOD (v294.1)
D	Carb_anhydrase	e8djgD1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Carb_anhydrase	ECOD (v294.1)
A	Carb_anhydrase	e8djgA1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Carb_anhydrase	ECOD (v294.1)
C	Carb_anhydrase	e8djgC1	A: a/b three-layered sandwiches	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Carb_anhydrase	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, D	Light Chain	IGKV1	Kappa	isoform 2 of adhesion g protein-coupled receptor l3	SAbDab (2026-04-10)
A, C	Heavy Chain	IGHV3	-	isoform 2 of adhesion g protein-coupled receptor l3	SAbDab (2026-04-10)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E, F	PF02140	D-galactoside/L-rhamnose binding SUEL lectin domain (SUEL_Lectin)	D-galactoside/L-rhamnose binding SUEL lectin domain	The D-galactoside binding lectin purified from sea urchin (Anthocidaris crassispina) eggs exists as a disulphide-linked homodimer of two subunits; the dimeric form is essential for hemagglutination activity [1]. The sea urchin egg lectin (SUEL) forms ...	The D-galactoside binding lectin purified from sea urchin (Anthocidaris crassispina) eggs exists as a disulphide-linked homodimer of two subunits; the dimeric form is essential for hemagglutination activity [1]. The sea urchin egg lectin (SUEL) forms a new class of lectins that binds D-galactoside and L-rhamnose, with preference for L-rhamnose [1,2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, F	Isoform 2 of Adhesion G protein-coupled receptor L3	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity molecular condensate scaffold activity protein-macromolecule adaptor activity molecular adaptor activity cell adhesion molecule binding cation binding ion binding binding calcium ion binding metal ion binding small molecule binding molecular transducer activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity molecular condensate scaffold activity protein-macromolecule adaptor activity molecular adaptor activity cell adhesion molecule binding protein binding cell adhesion mediator activity carbohydrate binding	developmental process multicellular organismal process nervous system development excitatory synapse assembly cellular component organization cellular component biogenesis multicellular organism development cell junction organization cellular component assembly cell junction assembly anatomical structure development cellular process synapse organization cellular component organization or biogenesis developmental process multicellular organismal process nervous system development excitatory synapse assembly cellular component organization cellular component biogenesis multicellular organism development cell junction organization cellular component assembly cell junction assembly anatomical structure development cellular process synapse organization cellular component organization or biogenesis synapse assembly system development cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation adenylate cyclase-activating G protein-coupled receptor signaling pathway cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction cell surface receptor signaling pathway Rho-activating G protein-coupled receptor signaling pathway neuron migration cellular developmental process generation of neurons neurogenesis cell differentiation cell migration cell motility	cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane cell-cell junction anchoring junction glutamatergic synapse axon cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane cell-cell junction anchoring junction glutamatergic synapse axon cell projection neuron projection plasma membrane bounded cell projection
B, D	sAB Light Chain	-	-	-
A, C	sAB Heavy Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, F	IPR017983	GPCR, family 2, secretin-like, conserved site	Conserved Site
E, F	IPR036445	GPCR family 2, extracellular hormone receptor domain superfamily	Homologous Superfamily
E, F	IPR000832	GPCR, family 2, secretin-like	Family
E, F	IPR043159	D-galactoside/L-rhamnose binding SUEL lectin domain superfamily	Homologous Superfamily
E, F	IPR000203	GPS motif	Conserved Site
E, F	IPR003112	Olfactomedin-like domain	Domain
E, F	IPR017981	GPCR, family 2-like, 7TM	Domain
E, F	IPR003924	GPCR, family 2, latrophilin	Family
E, F	IPR001879	GPCR, family 2, extracellular hormone receptor domain	Domain
E, F	IPR003334	GPCR, family 2, latrophilin, C-terminal	Domain
E, F	IPR032471	AGRL2-4 , GAIN subdomain A	Domain
E, F	IPR000922	D-galactoside/L-rhamnose binding SUEL lectin domain	Domain
E, F	IPR046338	GAIN domain superfamily	Homologous Superfamily
E, F	IPR057244	GAIN, subdomain B	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E, F	Pharos: Q9HAR2	attention deficit hyperactivity disorder, inattentive type sinusitis adenoma Attention Deficit Disorder atypical teratoid rhabdoid tumor glioblastoma large cell medulloblastoma pituitary cancer adrenal cortex adenoma breast cancer heart disease lung adenocarcinoma myocardial infarction psoriasis atopic eczema attention deficit hyperactivity disorder, inattentive type sinusitis adenoma Attention Deficit Disorder atypical teratoid rhabdoid tumor glioblastoma large cell medulloblastoma pituitary cancer adrenal cortex adenoma breast cancer heart disease lung adenocarcinoma myocardial infarction psoriasis atopic eczema ductal breast carcinoma in situ invasive ductal breast carcinoma medulloblastoma non-small cell lung carcinoma

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.