-
ABI1 of Arabidopsis is a protein serine/threonine phosphatase highly regulated by the proton and magnesium ion concentration.
Institut für Pflanzenwissenschaften, Eidgenössische Technische Hochschule Zürich, Switzerland.
The plant hormone abscisic acid (ABA) mediates various responses such as stomatal closure, maintenance of seed dormancy, and inhibition of plant growth. All three responses are regulated by the ABI1 gene product. The ABI1 protein (ABI1p) has been characterized as a protein serine/threonine phosphatase of type 2C that is highly affected in its activity by changes in the proton and magnesium ion concentrations. In the ABA-insensitive mutant abi1 of Arabidopsis thaliana a single amino acid exchange in the primary structure results in both a dominant insensitive phenotype and a strongly reduced protein phosphatase activity in vitro by possibly impairing metal ion coordination.
PMID: 9537523 [PubMed - indexed for MEDLINE]
-
Cited by 11 PubMed Central articles
-
Epigenetic regulation, somatic homologous recombination, and abscisic acid signaling are influenced by DNA polymerase epsilon mutation in Arabidopsis.
Yin H, Zhang X, Liu J, Wang Y, He J, Yang T, Hong X, Yang Q, Gong Z.
Plant Cell. 2009 Feb; 21(2):386-402. Epub 2009 Feb 24.
[Plant Cell. 2009]
-
Phosphorylation of the 12 S globulin cruciferin in wild-type and abi1-1 mutant Arabidopsis thaliana (thale cress) seeds.
Wan L, Ross AR, Yang J, Hegedus DD, Kermode AR.
Biochem J. 2007 Jun 1; 404(2):247-56.
[Biochem J. 2007]
-
Predicting essential components of signal transduction networks: a dynamic model of guard cell abscisic acid signaling.
Li S, Assmann SM, Albert R.
PLoS Biol. 2006 Oct; 4(10):e312.
[PLoS Biol. 2006]
- » See all...