Annotations: 4ARR

Crystal structure of the N-terminal domain of Drosophila Toll receptor with the magic triangle I3C

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
B	ABC_tran	e4arrB1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: ABC_tran	ECOD (v294.2)
A	C1-set	e4arrA1	A: beta barrels	X: Ribonuclease H-like	H: Ribonuclease H-like	T: Ribonuclease H-like	F: C1-set	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	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	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA	molecular transducer activity signaling receptor activity transmembrane signaling receptor activity cytokine receptor activity immune receptor activity protein binding binding cytokine binding TIR domain binding protein domain specific binding virion binding identical protein binding	biological process involved in interspecies interaction between organisms response to oomycetes response to stimulus response to other organism defense response response to stress response to external stimulus response to external biotic stimulus response to biotic stimulus defense response to oomycetes developmental process multicellular organism development multicellular organismal process dorsal/ventral pattern formation biological process involved in interspecies interaction between organisms response to oomycetes response to stimulus response to other organism defense response response to stress response to external stimulus response to external biotic stimulus response to biotic stimulus defense response to oomycetes developmental process multicellular organism development multicellular organismal process dorsal/ventral pattern formation dorsal/ventral axis specification anatomical structure development pattern specification process axis specification regionalization heart development animal organ development circulatory system development system development regulation of humoral immune response regulation of immune effector process positive regulation of response to biotic stimulus regulation of cellular process antifungal peptide production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process antimicrobial humoral immune response mediated by antimicrobial peptide positive regulation of immune response antifungal humoral response regulation of immune system process positive regulation of macromolecule metabolic process positive regulation of immune system process regulation of biological process immune response positive regulation of antifungal peptide production immune effector process regulation of gene expression regulation of defense response to fungus biosynthetic process regulation of response to stimulus defense response to other organism positive regulation of defense response positive regulation of production of molecular mediator of immune response regulation of immune response metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of production of molecular mediator of immune response regulation of metabolic process regulation of defense response humoral immune response regulation of response to biotic stimulus regulation of response to external stimulus positive regulation of biological process antimicrobial humoral response positive regulation of response to stimulus positive regulation of antimicrobial peptide production positive regulation of humoral immune response positive regulation of response to external stimulus positive regulation of biosynthetic process antimicrobial peptide production regulation of response to stress positive regulation of immune effector process positive regulation of cellular process production of molecular mediator of immune response regulation of biosynthetic process regulation of antimicrobial humoral response biological regulation defense response to symbiont regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of antifungal peptide production defense response to fungus positive regulation of antimicrobial humoral response regulation of antimicrobial peptide production positive regulation of gene expression immune system process cellular process response to fungus embryonic pattern specification embryo development regulation of multicellular organismal process regulation of embryonic pattern specification innate immune response regulation of growth regulation of cellular component organization negative regulation of biological process growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth negative regulation of cellular process cellular component organization or biogenesis cellular response to stimulus cell surface receptor signaling pathway signaling cell communication signal transduction Toll signaling pathway muscle structure development somatic muscle development larval somatic muscle development larval development post-embryonic development cell population proliferation positive regulation of cell population proliferation regulation of developmental process positive regulation of hemocyte proliferation regulation of hemocyte proliferation regulation of cell population proliferation hemocyte proliferation regulation of multicellular organism growth regulation of developmental growth negative regulation of multicellular organism growth developmental growth negative regulation of developmental process multicellular organism growth negative regulation of developmental growth negative regulation of multicellular organismal process cellular response to nitrogen compound negative regulation of signaling response to peptide hormone regulation of signal transduction insulin receptor signaling pathway regulation of cellular response to insulin stimulus negative regulation of cell communication cell surface receptor protein tyrosine kinase signaling pathway cellular response to endogenous stimulus response to hormone enzyme-linked receptor protein signaling pathway cellular response to hormone stimulus regulation of signaling negative regulation of response to stimulus response to endogenous stimulus regulation of insulin receptor signaling pathway response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound negative regulation of signal transduction cellular response to oxygen-containing compound cellular response to chemical stimulus negative regulation of cellular response to insulin stimulus negative regulation of insulin receptor signaling pathway response to chemical response to insulin regulation of cell communication cellular response to insulin stimulus antifungal innate immune response response to tumor cell response to wounding neuron recognition negative chemotaxis cellular developmental process cell development synaptic target recognition neurogenesis neuron differentiation taxis cell differentiation synaptic target inhibition cell recognition locomotion chemotaxis nervous system development generation of neurons neuron development cell adhesion cell competition in a multicellular organism detection of virus response to virus cellular component biogenesis cell junction organization cellular component assembly cell junction assembly synapse organization synapse assembly positive regulation of DNA-templated transcription RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II primary metabolic process positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription defense response to Gram-positive bacterium defense response to bacterium response to bacterium	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane cell division site cleavage furrow plasma membrane region membrane-bounded organelle intracellular anatomical structure early endosome endosome cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane cell division site cleavage furrow plasma membrane region membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000372	Leucine-rich repeat N-terminal domain	Domain
A, B	IPR000157	Toll/interleukin-1 receptor homology (TIR) domain	Domain
A, B	IPR003591	Leucine-rich repeat, typical subtype	Repeat
A, B	IPR026906	BspA-type LRR region	Repeat
A, B	IPR001611	Leucine-rich repeat	Repeat
A, B	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
A, B	IPR035897	Toll/interleukin-1 receptor homology (TIR) domain superfamily	Homologous Superfamily
A, B	IPR000483	Cysteine-rich flanking region, C-terminal	Domain
A, B	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
A, B	IPR000372	Leucine-rich repeat N-terminal domain	Domain
A, B	IPR024592	Variable_lymphocyte_rcpt_C	Unknown
A, B	IPR001611	Leucine-rich repeat	Repeat
A, B	IPR050541	Leucine-rich repeat and transmembrane domain-containing protein	Family
A, B	IPR003591	Leucine-rich repeat, typical subtype	Repeat

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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.

4ARR | pdb_00004arr

Crystal structure of the N-terminal domain of Drosophila Toll receptor with the magic triangle I3C

External Resource: Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Domain Annotation: CATH CATH Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage