Figure 5.

His-containing phosphotransfer proteins in Arabidopsis. A, Unrooted relationship tree of His-containing phosphotransfer proteins (AHPs). Programs used were Clustal X for alignment and TreeView for graphical output. The entire amino acid sequences were aligned. B, Alignment of deduced amino acid sequences of His phosphotransfer proteins in Arabidopsis. AHP1-5 contains the highly conserved XHQXKGSSXS motif, which includes the His phosphorylation site. The putative His phosphorylation residue of AHP6 is replaced by an Asn. H, Conserved His phosphorylation site; the asterisk marks a potential His phosphorylation residue of AHP6.