InterPro domain: IPR031142

General Information

  • Identifier IPR031142
  • Description SPX domain-containing protein
  • Number of genes 580
  • Gene duplication stats Loading...
  • Associated GO terms GO:0016036  

Abstract

This entry represents a group of plant SPX domain-containing proteins, including AtSPX1-6 from Arabidopsis. AtSPX1 ( Q8LBH4 ) and AtSPX2 ( O48781 ) have a cellular Pi-dependent inhibitory effect on Phosphate Starvation Response 1 (PHR1) [ 1 ]. Their rice homologue, OsSPX1 ( Q69XJ0 ), may play an important role in linking cold stress and Pi starvation signal transduction pathways [ 2 ].


1. SPX1 is a phosphate-dependent inhibitor of Phosphate Starvation Response 1 in Arabidopsis. Proc. Natl. Acad. Sci. U.S.A. 111, 14947-52
2. Increased expression of OsSPX1 enhances cold/subfreezing tolerance in tobacco and Arabidopsis thaliana. Plant Biotechnol. J. 7, 550-61

Species distribution

Gene table