4NFU

Structure of the central plant immunity signaling node EDS1 in complex with its interaction partner SAG101

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
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)
A	PF18117	e4nfuA2	A: alpha arrays	X: EDS1-PAD4 (EP) domain (From Topology)	H: EDS1-PAD4 (EP) domain (From Topology)	T: EDS1-PAD4 (EP) domain	F: PF18117	ECOD (1.6)
A	PF01764	e4nfuA1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: PF01764	ECOD (1.6)
B	PF18117	e4nfuB2	A: alpha arrays	X: EDS1-PAD4 (EP) domain (From Topology)	H: EDS1-PAD4 (EP) domain (From Topology)	T: EDS1-PAD4 (EP) domain	F: PF18117	ECOD (1.6)
B	PF01764	e4nfuB1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: PF01764	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18117	Enhanced disease susceptibility 1 protein EP domain (EDS1_EP)	Enhanced disease susceptibility 1 protein EP domain	The plant specific protein family, which comprises EDS1 (Enhanced disease susceptibility 1), PAD4 (Phytoalexin deficient4) and SAG101 (Senescence-associated gene 101), is involved in innate immunity [Ref.1]. Signaling by intracellular immune receptor ...	The plant specific protein family, which comprises EDS1 (Enhanced disease susceptibility 1), PAD4 (Phytoalexin deficient4) and SAG101 (Senescence-associated gene 101), is involved in innate immunity [Ref.1]. Signaling by intracellular immune receptors with NB-ARC domain (Pfam:PF00931) relies on this protein family [1,3]. C-terminus of Arabidopsis EDS1 and PAD4 proteins did not have recognizable sequence homology to other domains and therefore named EP domain (EDS1-PAD4) [2]. A combination of an N-terminal lipase_3 domain (Pfam:PF01764) and the C-terminal EP-domain is the defining feature of this family. Structurally, EP domain comprises exclusively of alpha-helices (PDB:4NFU) [1]. Structure-function analysis of Arabidopsis proteins showed that EDS1 forms heterodimers with PAD4 or SAG101, chiefly through the N-terminal lipase_3 domain. These heterodimers are essential for plant defense signaling. The EP domain is not stable without the lipase_3 domain, but is required for immunity [1]. Mutations of conserved residues in the EP domain of EDS1 strongly affect its immune signaling function [4].	Domain
A	PF01764	Lipase (class 3) (Lipase_3)	Lipase (class 3)	-	Family
B	PF18117	Enhanced disease susceptibility 1 protein EP domain (EDS1_EP)	Enhanced disease susceptibility 1 protein EP domain	The plant specific protein family, which comprises EDS1 (Enhanced disease susceptibility 1), PAD4 (Phytoalexin deficient4) and SAG101 (Senescence-associated gene 101), is involved in innate immunity [Ref.1]. Signaling by intracellular immune receptor ...	The plant specific protein family, which comprises EDS1 (Enhanced disease susceptibility 1), PAD4 (Phytoalexin deficient4) and SAG101 (Senescence-associated gene 101), is involved in innate immunity [Ref.1]. Signaling by intracellular immune receptors with NB-ARC domain (Pfam:PF00931) relies on this protein family [1,3]. C-terminus of Arabidopsis EDS1 and PAD4 proteins did not have recognizable sequence homology to other domains and therefore named EP domain (EDS1-PAD4) [2]. A combination of an N-terminal lipase_3 domain (Pfam:PF01764) and the C-terminal EP-domain is the defining feature of this family. Structurally, EP domain comprises exclusively of alpha-helices (PDB:4NFU) [1]. Structure-function analysis of Arabidopsis proteins showed that EDS1 forms heterodimers with PAD4 or SAG101, chiefly through the N-terminal lipase_3 domain. These heterodimers are essential for plant defense signaling. The EP domain is not stable without the lipase_3 domain, but is required for immunity [1]. Mutations of conserved residues in the EP domain of EDS1 strongly affect its immune signaling function [4].	Domain
B	PF01764	Lipase (class 3) (Lipase_3)	Lipase (class 3)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	EDS1	hydrolase activity catalytic activity	organic substance metabolic process primary metabolic process metabolic process lipid metabolic process response to stimulus defense response response to stress	membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle nucleus intracellular membrane-bounded organelle cellular anatomical entity endoplasmic reticulum cytoplasm endomembrane system
B	Senescence-associated carboxylesterase 101	hydrolase activity, acting on ester bonds carboxylesterase activity carboxylic ester hydrolase activity hydrolase activity catalytic activity	lipid catabolic process organic substance metabolic process catabolic process primary metabolic process metabolic process organic substance catabolic process lipid metabolic process 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 response to stimulus regulation of response to external stimulus positive regulation of biological process lipid catabolic process organic substance metabolic process catabolic process primary metabolic process metabolic process organic substance catabolic process lipid metabolic process 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 response to stimulus regulation of response to external stimulus positive regulation of biological process response to biotic stimulus positive regulation of response to stimulus defense response to bacterium positive regulation of defense response to bacterium positive regulation of response to external stimulus regulation of response to stress response to stress response to bacterium response to external biotic stimulus regulation of defense response to bacterium regulation of biological process defense response response to other organism biological regulation response to external stimulus regulation of response to stimulus defense response to other organism positive regulation of defense response cellular response to stimulus immune response defense response to symbiont cell death symbiont-induced defense-related programmed cell death cellular response to stress immune system process plant-type hypersensitive response innate immune response cellular process programmed cell death regulation of defense response to virus defense response to virus positive regulation of defense response to virus by host regulation of defense response to virus by host response to virus developmental process multicellular organismal process plant organ development plant organ senescence regulation of developmental process positive regulation of leaf senescence regulation of leaf senescence positive regulation of developmental process multicellular organism development anatomical structure development leaf development leaf senescence shoot system development phyllome development system development defense response to Gram-negative bacterium response to oomycetes regulation of defense response to oomycetes positive regulation of defense response to oomycetes defense response to oomycetes leaf abscission abscission response to organic substance regulation of cellular process signaling response to salicylic acid cell communication signal transduction cellular response to organic substance salicylic acid mediated signaling pathway response to organic cyclic compound cellular response to salicylic acid stimulus systemic acquired resistance cellular response to organic cyclic compound response to oxygen-containing compound systemic acquired resistance, salicylic acid mediated signaling pathway cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical	protein-containing complex EDS1 disease-resistance complex membrane cellular anatomical entity intracellular anatomical structure cytoplasm membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR044214	EDS1-like	Family
A	IPR041266	EDS1, EP domain	Domain
A	IPR002921	Fungal lipase-like domain	Domain
A	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
B	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
B	IPR041266	EDS1, EP domain	Domain
B	IPR002921	Fungal lipase-like domain	Domain
B	IPR044603	Senescence-associated carboxylesterase 101-like	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.