Annotations: 8YOT

Nanobody in complex with LILRB3

External Resource: Annotation

Domain Annotation: ECOD Classification
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)
D	Nitrate_red_del	e8yotD1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: Hypothetical protein YqbG-like	F: Nitrate_red_del	ECOD (v295.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A, C	Heavy Chain	IGHV1	-	lilrb3	SAbDab (2026-09-25)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF00047	Immunoglobulin domain (ig)	Immunoglobulin domain	Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-prote ...	Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	LILRB3	molecular transducer activity signaling receptor activity inhibitory MHC class I receptor activity MHC class I receptor activity transmembrane signaling receptor activity immune receptor activity	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus signal transduction immune response-regulating cell surface receptor signaling pathway immune response immune response-inhibiting cell surface receptor signaling pathway immune response-regulating signaling pathway regulation of response to stimulus immune system process immune response-inhibiting signal transduction regulation of immune response regulation of immune system process myeloid leukocyte differentiation regulation of leukocyte differentiation multicellular organismal process cellular developmental process regulation of developmental process negative regulation of biological process cell development regulation of cell differentiation regulation of cell development regulation of osteoclast differentiation multicellular organism development cell differentiation osteoclast differentiation anatomical structure development negative regulation of cellular process regulation of multicellular organismal process negative regulation of cell differentiation negative regulation of hemopoiesis developmental process regulation of multicellular organismal development negative regulation of leukocyte differentiation hemopoiesis regulation of myeloid cell differentiation negative regulation of developmental process regulation of myeloid leukocyte differentiation negative regulation of myeloid cell differentiation negative regulation of osteoclast differentiation negative regulation of myeloid leukocyte differentiation negative regulation of cell development myeloid cell differentiation negative regulation of immune system process regulation of hemopoiesis negative regulation of multicellular organismal process leukocyte differentiation defense response response to stress	membrane-bounded organelle intracellular anatomical structure membrane intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane cellular anatomical structure bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle secretory granule membrane-bounded organelle intracellular anatomical structure membrane intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane cellular anatomical structure bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle organelle membrane secretory granule membrane cell periphery plasma membrane
A, C	nanobody	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B, D	IPR003598	Immunoglobulin subtype 2	Domain
B, D	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
B, D	IPR050412	Immunoglobulin-like Receptors in Immune Regulation	Family
B, D	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, D	IPR003599	Immunoglobulin domain subtype	Domain
B, D	IPR007110	Immunoglobulin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B, D	: O75022	alcoholic liver cirrhosis prostate carcinoma Takayasu arteritis