Annotations: 5D3I

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	SSL_OB	e5d3iB2	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: SSL_OB	ECOD (1.6)
B	Stap_Strp_tox_C	e5d3iB1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Stap_Strp_tox_C	ECOD (1.6)
A	LRR_8_3	e5d3iA2	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_3	ECOD (1.6)
A	LRR_8_1	e5d3iA1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.10.20.120	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)
B	2.40.50.110	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF09199	Staphylococcal superantigen-like OB-fold domain (SSL_OB)	Staphylococcal superantigen-like OB-fold domain	This OB-fold domain folds into a five-stranded beta-barrel [1]. Members of this family are found in various staphylococcal toxins described as staphylococcal superantigen-like (SSL) proteins that are related to the staphylococcal enterotoxins (SEs) o ...	This OB-fold domain folds into a five-stranded beta-barrel [1]. Members of this family are found in various staphylococcal toxins described as staphylococcal superantigen-like (SSL) proteins that are related to the staphylococcal enterotoxins (SEs) or superantigens. These SSL proteins of which 11 have so far been characterised have a typical SE tertiary structure consisting of a distinct oligonucleotide/oligosaccharide binding (OB-fold), this domain, linked to a beta-grasp domain, family Stap_Strp_tox_C, Pfam:PF02876. SSLs do not bind to T-cell receptors or major histocompatibility complex class II molecules and do not stimulate T cells. SSLs target components of innate immunity, such as complement, Fc receptors, and myeloid cells 2,3,4,5,6,7,8]. SSL protein 7 (SSL7) is the best characterised of the SSLs and binds complement factor C5 and IgA with high affinity and inhibits the end stage of complement activation and IgA binding to FcalphaR [8].	Domain
B	PF02876	Staphylococcal/Streptococcal toxin, beta-grasp domain (Stap_Strp_tox_C)	Staphylococcal/Streptococcal toxin, beta-grasp domain		Domain
A	PF13855	Leucine rich repeat (LRR_8)	Leucine rich repeat	-	Repeat
A	PF13516	Leucine Rich repeat (LRR_6)	Leucine Rich repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Staphylococcal Superantigen-Like protein 3	-	-	cellular anatomical structure extracellular region
A	Toll-like receptor 2	amide binding amyloid-beta binding binding peptide binding diacyl lipopeptide binding lipid binding lipopeptide binding protein-containing complex binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity hydrolase activity, acting on glycosyl bonds NAD+ nucleosidase activity, cyclic ADP-ribose generating hydrolase activity amide binding amyloid-beta binding binding peptide binding diacyl lipopeptide binding lipid binding lipopeptide binding protein-containing complex binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity hydrolase activity, acting on glycosyl bonds NAD+ nucleosidase activity, cyclic ADP-ribose generating hydrolase activity hydrolase activity, hydrolyzing N-glycosyl compounds catalytic activity triacyl lipopeptide binding pattern recognition receptor activity carbohydrate derivative binding lipoteichoic acid binding	regulation of biosynthetic process regulation of nitric oxide biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process reactive nitrogen species metabolic process positive regulation of nitric oxide metabolic process nitric oxide metabolic process positive regulation of metabolic process nitric oxide biosynthetic process biosynthetic process positive regulation of biosynthetic process cellular process regulation of biosynthetic process regulation of nitric oxide biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process reactive nitrogen species metabolic process positive regulation of nitric oxide metabolic process nitric oxide metabolic process positive regulation of metabolic process nitric oxide biosynthetic process biosynthetic process positive regulation of biosynthetic process cellular process metabolic process regulation of nitric oxide metabolic process positive regulation of nitric oxide biosynthetic process regulation of metabolic process positive regulation of cellular process behavior multicellular organismal process system process learning learning or memory nervous system process cognition cellular response to stimulus regulation of defense response positive regulation of response to biotic stimulus regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms pattern recognition receptor signaling pathway response to stimulus regulation of response to external stimulus toll-like receptor signaling pathway signaling response to biotic stimulus cell communication positive regulation of response to stimulus immune response-activating signaling pathway positive regulation of response to external stimulus immune response-regulating signaling pathway positive regulation of immune response regulation of response to stress response to stress innate immune response regulation of immune system process response to external biotic stimulus signal transduction positive regulation of immune system process innate immune response-activating signaling pathway MyD88-dependent toll-like receptor signaling pathway positive regulation of innate immune response defense response immune response response to other organism regulation of innate immune response defense response to symbiont response to external stimulus regulation of response to stimulus immune system process defense response to other organism positive regulation of defense response activation of innate immune response regulation of immune response activation of immune response regulation of inflammatory response positive regulation of inflammatory response inflammatory response catabolic process macroautophagy autophagy xenophagy process utilizing autophagic mechanism interleukin-1 production regulation of interleukin-1 beta production positive regulation of macromolecule biosynthetic process positive regulation of interleukin-1 beta production regulation of cytokine production cytokine production regulation of multicellular organismal process positive regulation of interleukin-1 production positive regulation of macromolecule metabolic process regulation of interleukin-1 production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression interleukin-1 beta production positive regulation of gene expression positive regulation of multicellular organismal process regulation of macromolecule biosynthetic process macromolecule metabolic process positive regulation of cytokine production positive regulation of xenophagy regulation of autophagy positive regulation of macroautophagy positive regulation of autophagy regulation of xenophagy regulation of catabolic process positive regulation of catabolic process regulation of macroautophagy regulation of chemokine production chemokine production positive regulation of chemokine production positive regulation of cell communication regulation of signaling positive regulation of signal transduction positive regulation of intracellular signal transduction regulation of signal transduction intracellular signal transduction regulation of intracellular signal transduction regulation of cell communication positive regulation of signaling cellular response to lipoteichoic acid response to oxygen-containing compound response to lipoteichoic acid cellular response to molecule of bacterial origin cellular response to oxygen-containing compound cellular response to biotic stimulus cellular response to chemical stimulus response to bacterium response to chemical response to molecule of bacterial origin regulation of immune effector process positive regulation of myeloid leukocyte cytokine production involved in immune response positive regulation of immune effector process myeloid leukocyte cytokine production cytokine production involved in immune response production of molecular mediator of immune response regulation of cytokine production involved in immune response immune effector process regulation of macrophage cytokine production positive regulation of cytokine production involved in immune response positive regulation of production of molecular mediator of immune response regulation of production of molecular mediator of immune response positive regulation of macrophage cytokine production macrophage cytokine production negative regulation of biological process negative regulation of cellular process negative regulation of macromolecule metabolic process interleukin-17 production negative regulation of interleukin-17 production negative regulation of metabolic process negative regulation of cytokine production negative regulation of gene expression regulation of interleukin-17 production negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of multicellular organismal process 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 positive regulation of nucleobase-containing compound metabolic process 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 cellular response to bacterial lipoprotein response to bacterial lipoprotein response to bacterial lipopeptide cellular response to bacterial lipopeptide cellular response to triacyl bacterial lipopeptide response to triacyl bacterial lipopeptide response to molecule of fungal origin response to fungus immune response-regulating cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway innate immune response activating cell surface receptor signaling pathway cell surface pattern recognition receptor signaling pathway cell surface receptor signaling pathway myeloid leukocyte differentiation cellular developmental process cell development mononuclear cell differentiation glial cell development multicellular organism development neurogenesis gliogenesis cell differentiation microglia differentiation anatomical structure development system development developmental process hemopoiesis macrophage differentiation nervous system development microglia development central nervous system development glial cell differentiation myeloid cell differentiation myeloid cell development leukocyte differentiation cellular response to nitrogen compound cellular response to peptidoglycan response to nitrogen compound response to peptidoglycan positive regulation of ERK1 and ERK2 cascade intracellular signaling cassette positive regulation of MAPK cascade regulation of MAPK cascade MAPK cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of locomotion regulation of cell motility positive regulation of cell migration positive regulation of cell motility regulation of cell migration myeloid leukocyte migration cell migration cell motility locomotion regulation of leukocyte migration positive regulation of neutrophil migration positive regulation of leukocyte migration neutrophil migration granulocyte migration leukocyte migration regulation of locomotion regulation of neutrophil migration response to diacyl bacterial lipopeptide cellular response to diacyl bacterial lipopeptide interleukin-6 production positive regulation of interleukin-6 production regulation of interleukin-6 production regulation of cellular component organization regulation of developmental process regulation of nervous system development cellular component organization cellular component biogenesis cellular component assembly negative regulation of cell junction assembly cell junction assembly negative regulation of nervous system development regulation of synapse structure or activity synapse organization cellular component organization or biogenesis regulation of biological quality regulation of synapse assembly regulation of multicellular organismal development negative regulation of cellular component organization negative regulation of developmental process negative regulation of synapse organization regulation of cellular component biogenesis regulation of cell junction assembly regulation of synapse organization cell junction organization synapse assembly negative regulation of synapse assembly detection of bacterial lipoprotein detection of external biotic stimulus detection of molecule of bacterial origin detection of biotic stimulus detection of bacterium detection of diacyl bacterial lipopeptide detection of stimulus detection of chemical stimulus detection of other organism detection of bacterial lipopeptide regulation of interleukin-12 production interleukin-12 production positive regulation of interleukin-12 production detection of triacyl bacterial lipopeptide regulation of interferon-beta production interferon-beta production positive regulation of type I interferon production type I interferon production positive regulation of interferon-beta production regulation of type I interferon production regulation of cytoskeleton organization regulation of actin filament-based process regulation of cellular component size regulation of protein-containing complex assembly protein-containing complex assembly actin filament-based process negative regulation of protein polymerization regulation of actin filament polymerization negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization protein polymerization actin polymerization or depolymerization regulation of actin filament organization actin cytoskeleton organization actin filament polymerization protein-containing complex organization negative regulation of cytoskeleton organization regulation of actin polymerization or depolymerization actin filament organization regulation of organelle organization negative regulation of protein-containing complex assembly organelle organization negative regulation of organelle organization regulation of protein polymerization regulation of actin filament length regulation of actin cytoskeleton organization regulation of supramolecular fiber organization supramolecular fiber organization cytoskeleton organization regulation of anatomical structure size dendritic cell cytokine production regulation of dendritic cell cytokine production leukocyte mediated immunity regulation of leukocyte mediated immunity regulation of localization import into cell transport negative regulation of transport negative regulation of endocytosis vesicle-mediated transport localization negative regulation of phagocytosis phagocytosis regulation of endocytosis regulation of transport regulation of phagocytosis regulation of vesicle-mediated transport establishment of localization endocytosis negative regulation of interleukin-12 production positive regulation of interleukin-18 production regulation of interleukin-18 production interleukin-18 production regulation of tumor necrosis factor production positive regulation of tumor necrosis factor superfamily cytokine production tumor necrosis factor superfamily cytokine production positive regulation of tumor necrosis factor production tumor necrosis factor production regulation of tumor necrosis factor superfamily cytokine production defense response to Gram-positive bacterium defense response to bacterium	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle phagocytic vesicle membrane cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle phagocytic vesicle membrane cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane organelle endocytic vesicle membrane cytoplasm vesicle organelle membrane endocytic vesicle Golgi apparatus endomembrane system protein-containing complex plasma membrane protein complex Toll-like receptor 2-Toll-like receptor 6 protein complex plasma membrane signaling receptor complex membrane protein complex receptor complex Toll-like receptor 1-Toll-like receptor 2 protein complex membrane microdomain membrane raft

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR006123	Staphylococcal/Streptococcal toxin, beta-grasp domain	Domain
B	IPR006126	Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin, conserved site	Conserved Site
B	IPR016091	Superantigen toxin, C-terminal	Homologous Superfamily
B	IPR008375	Staphylococcus aureus exotoxin	Family
B	IPR013307	Superantigen, staphylococcal/streptococcal toxin, bacterial	Family
B	IPR008992	Enterotoxin	Homologous Superfamily
B	IPR015282	Staphylococcal superantigen-like OB-fold domain	Domain
A	IPR001611	Leucine-rich repeat	Repeat
A	IPR017241	Toll-like receptor	Family
A	IPR035897	Toll/interleukin-1 receptor homology (TIR) domain superfamily	Homologous Superfamily
A	IPR000483	Cysteine-rich flanking region, C-terminal	Domain
A	IPR000157	Toll/interleukin-1 receptor homology (TIR) domain	Domain
A	IPR003591	Leucine-rich repeat, typical subtype	Repeat
A	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily

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.