Fig. 3

Phylogenetic relationship of SET domain-containing proteins in Oryza sativa (SDG numbers with three numerals starting with 7) and A. thaliana (SDG numbers with 1 or 2 numerals). All the sequences of SET domain-containing proteins were obtained from ChromDB database (www.chromdb.org). The alignment of these sequences was conducted by the ClustalX program. The SET domain sequences were selected to construct the phylogenetic tree by using MEGA3.1. Only the tree topology is shown. The classification of SET domain proteins was in accordance with that described in Baumbusch et al. (2001). SUVH SU(VAR)3-9 homolog, SUVR SUVH-related, ASHH ASH1 homolog, E(Z)H E(Z) homolog, TXH tritorax homolog. The TXR (TXH-related) and ASHR (ASH1-Related) groups were not noted because of their truncated SET domains. For the proteins that had been published, there designations in the papers were annotated in the parenthesis behind the ChromDB name (SDG7⁺ or SDG⁺).