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. 2002 Sep 30;1:e0058. doi: 10.1199/tab.0058

Figure 3.

Figure 3.

Homologies among Arabidopsis PP2Cs. (A) ABI1 and 40 most closely related predicted Arabidopsis proteins identified by a BLAST search (identified by AGI number for the corresponding genes) were analyzed by the Pileup program of GCG, using progressive pair-wise alignments. All four of the PP2Cs previously shown to affect ABA signaling are present in a subfamily of nine members (comprising approximately 13% of the PP2Cs identified by BLAST analysis), underlined and labeled on the dendrogram. (B) Comparison of a conserved region of the PP2C domain within the ABI1 subfamily. Residues labeled with * have been shown to be critical to phosphatase function and/or ABA signaling. Although this and several other conserved areas extend well beyond these critical residues, these homologies are limited to this subfamily.