Authors: Meng Yang Shuhui Song Guiming Liu Kaifu Chen Xiangjun Tian Zhizhuang Joe Zhao Songnian Hu Jun Yu
Publish Date: 2010/08/15
Volume: 289, Issue: 3-4, Pages: 111-126
Abstract
Protein phosphatases play essential roles in many cellular processes through the reversible protein phosphorylation that dictates many signal transduction pathways among organisms Based on an in silico analysis we classified 163 and 164 nonredundant protein phosphatases in rice and Arabidopsis respectively Protein serine/threonine phosphatases make up 67 of the total in both plants in contrast to those of human where this fraction is about 27 Based on domain organization and intron composition analyses we found that protein phosphatases in the two plants are highly conserved in structure Evolutionary analysis suggests that segmental duplications occurring 40–70 million years ago contributed to the limited expansion of protein phosphatases Gene expression analysis suggests that most phosphatases have broad expression spectra with high abundance in four surveyed tissues root leaf inflorescence and seedling only 46 and 12 phosphatases expressed in a single tissue of rice and Arabidopsis respectively regardless of their expression levels Promoter analysis among different phosphatase subfamilies demonstrates a variable distribution of the wbox a ciselement involved in disease resistance between rice and ArabidopsisThe work is granted from 863 Program 2009AA01A130 of Chinese Ministry of Science and Technology The work also received financial support from the Chinese Academy of Science KSCX1SW03 and the National Basic Research Program of China 2006CB910404 awarded to JY
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