Disease resistance protein RPS4 - Q9XGM3 (RPS4C_ARATH)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q9XGM3: 2
Disease resistance (R) protein that specifically recognizes the AvrRps4 type III effector avirulence protein from P.syringae. Resistance proteins guard the plant against pathogens that contain an appropriate avirulence protein via an indirect interaction with this avirulence protein. That triggers a defense system including the hypersensitive response, which restricts the pathogen growth. The combined presence of both regular and alternative RPS4 transcripts with truncated open reading frames (ORFs) is necessary for function (PubMed:17951452). RPS4 function is regulated at multiple levels, including gene expression, alternative splicing, and protein stability (PubMed:17951452). When over-expressed, confers temperature-conditioned EDS1-dependent auto-immunity (PubMed:24146667). Heterodimerization with RRS1 is required to form a functional complex to recognize AvrRps4 and PopP2 (PubMed:24744375). Abscisic acid deficiency enhances nuclear accumulation of RPS4 and its cell death-inducing activity (PubMed:22454454). UniProt
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Subunit Structure
Interacts with EDS1 (PubMed:22158818, PubMed:22158819). Interacts with SRFR1 (PubMed:21079790). Interacts with RRS1 (PubMed:24744375). UniProt
The TIR domain is a signaling domain involved in cell death induction (PubMed:19132868). It is involved in homo- and heterodimerization, but other domains also contribute to the interaction (PubMed:24744375). The LRR domain may interact directly with pathogen-derived elicitors (PubMed:10571887). UniProt
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