7CRB

Cryo-EM structure of plant NLR RPP1 LRR-ID domain in complex with ATR1


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth J]EUF07982e7crbJ3 A: alpha arraysX: WY-domain in RXLR effectors (From Topology)H: WY-domain in RXLR effectors (From Topology)T: WY-domain in RXLR effectorsF: EUF07982ECOD (1.6)
A [auth J]EUF08035e7crbJ1 A: alpha arraysX: ATR1 N-terminal domain (From Topology)H: ATR1 N-terminal domain (From Topology)T: ATR1 N-terminal domainF: EUF08035ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A [auth J]PF22223ATR1 N-terminal domain (ATR1_N)ATR1 N-terminal domainHost-adapted plant pathogens secrete numerous effectors into the host extracellular spaces or inside cells. The A. thaliana TNL receptor RPP1 confers strain-specific immunity through recognition of H.arabidopsidis effector ATR1. ATR1 consists of two ...Host-adapted plant pathogens secrete numerous effectors into the host extracellular spaces or inside cells. The A. thaliana TNL receptor RPP1 confers strain-specific immunity through recognition of H.arabidopsidis effector ATR1. ATR1 consists of two alpha-helical domains that are involved in interactions with the receptor. The ATR1 N-terminal domain interacts with both, the C-terminal jelly roll/Ig-like domain (C-JID) and the LRRs of the RPP1 receptor [1].
Domain
A [auth J]PF21421Avirulence protein ATR1, WY-domain (ATR1_WY-dom)Avirulence protein ATR1, WY-domainAvirulence protein ATR1 is a secreted effector that acts as an elicitor of hypersensitive response (HR) specifically on plants. It activates the N-terminal Toll-interleukin-1 receptor (TIR) domain of Arabidopsis NLR RPP1 [1]. This entry represents t ...Avirulence protein ATR1 is a secreted effector that acts as an elicitor of hypersensitive response (HR) specifically on plants. It activates the N-terminal Toll-interleukin-1 receptor (TIR) domain of Arabidopsis NLR RPP1 [1]. This entry represents the C-terminal helical domain, referred to as the WY-domain.
Domain
B [auth A]PF20160C-JID domain (C-JID)C-JID domainC-terminal jelly roll/Ig-like domain (C-JID) was defined in cryogenic electron microscopy (cryoEM) structures of plant intracellular immune receptors containing Toll/interleukin-1 receptor (TIR, PF01582), nucleotide-binding (NB-ARC, PF00931) and leuc ...C-terminal jelly roll/Ig-like domain (C-JID) was defined in cryogenic electron microscopy (cryoEM) structures of plant intracellular immune receptors containing Toll/interleukin-1 receptor (TIR, PF01582), nucleotide-binding (NB-ARC, PF00931) and leucine-rich repeat (LRR) domains (TIR-NLRs) [1,2]. Structurally, the C-JID core is represented by a beta-sandwich made up of 8 to 9 beta-strands. C-JID matches the so-called post-LRR or C-terminal non-LRR domain detected earlier via MEME and BLAST searches [3,7]. The domain showed a strong distribution bias towards TIR-NLRs of dicotyledonous plant species despite broader taxonomic distribution of TIR-NLR in plant groups [1-7]. Structure-function analyses of cryoEM structures suggest that C-JID domains play a role in substrate recognition, such as binding to effector proteins from pathogens, and thus are involved in the initiation of signaling by TIR-NLR receptors [1,2]. Presence of C-JID (or post-LRR) and its importance for the function of Arabidopsis TIR-NLR RPS4 that partners with RRS1 for effector recognition suggest that C-JID has additional functions [4-6].
Domain
B [auth A]PF07725Leucine Rich Repeat (LRR_3)Leucine Rich Repeat- Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth J]Avirulence protein ATR1-
B [auth A]NAD+ hydrolase (NADase) -