Structural highlights
Function
[DPNP1_ARATH] Converts adenosine 3'-phosphate 5'-phosphosulfate (PAPS) to adenosine 5'-phosphosulfate (APS) and 3'(2')-phosphoadenosine 5'- phosphate (PAP) to AMP. May regulate the flux of sulfur in the sulfur-activation pathway by converting PAPS to APS. May play a role in the biosynthesis of sulfate conjugates and RNA processing. Is also able to hydrolyze inositol 1,4-bisphosphate and inositol 1,3,4-trisphosphate. Could be considered as a negative regulator of abscisic acid (ABA)- and stress-responsive genes, through modulating the inositol 1,4,5-trisphosphate (IP3) turnover. Is also involved in salt tolerance. Acts as a suppressor of virus- and transgene-induced silencing.[1] [2] [3]
References
- ↑ Xiong L, Lee Bh, Ishitani M, Lee H, Zhang C, Zhu JK. FIERY1 encoding an inositol polyphosphate 1-phosphatase is a negative regulator of abscisic acid and stress signaling in Arabidopsis. Genes Dev. 2001 Aug 1;15(15):1971-84. PMID:11485991 doi:http://dx.doi.org/10.1101/gad.891901
- ↑ Gy I, Gasciolli V, Lauressergues D, Morel JB, Gombert J, Proux F, Proux C, Vaucheret H, Mallory AC. Arabidopsis FIERY1, XRN2, and XRN3 are endogenous RNA silencing suppressors. Plant Cell. 2007 Nov;19(11):3451-61. Epub 2007 Nov 9. PMID:17993620 doi:http://dx.doi.org/10.1105/tpc.107.055319
- ↑ Quintero FJ, Garciadeblas B, Rodriguez-Navarro A. The SAL1 gene of Arabidopsis, encoding an enzyme with 3'(2'),5'-bisphosphate nucleotidase and inositol polyphosphate 1-phosphatase activities, increases salt tolerance in yeast. Plant Cell. 1996 Mar;8(3):529-37. PMID:8721754