Molecular cloning in Arabidopsis thaliana of a new protein phosphatase 2C (PP2C) with homology to ABI1 and ABI2 |
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| Authors: | Rodriguez Pedro L Leube Martin P Grill Erwin |
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| Institution: | (1) Instituto de Biologia Molecular y Celular de Plantas, Universidad Politécnica - C.S.I.C., Camino de Vera, 46022 Valencia, Spain;(2) TU-München, Lehrstuhl für Botanik, Arcisstrasse 16, 80333 München, Germany |
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| Abstract: | We report the cloning of both the cDNA and the corresponding genomic sequence of a new PP2C from Arabidopsis thaliana, named AtP2C-HA (for homology to ABI1/ABI2). The AtP2C-HA cDNA contains an open reading frame of 1536 bp and encodes a putative protein of 511 amino acids with a predicted molecular mass of 55.7 kDa. The AtP2C-HA protein is composed of two domains, a C-terminal PP2C catalytic domain and a N-terminal extension of ca. 180 amino acid residues. The deduced amino acid sequence is 55% and 54% identical to ABI1 and ABI2, respectively. Comparison of the genomic structure of the ABI1, ABI2 and AtP2C-HA genes suggests that they belong to a multigene family. The expression of the AtP2C-HA gene is up-regulated by abscisic acid (ABA) treatment. |
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| Keywords: | abscisic acid signal transduction |
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