Molecular evolution of maize catalases and their relationship to other eukaryotic and prokaryotic catalases.

摘要: We have compared the nucleotide and protein sequences of three maize catalase genes with other plant catalases to reconstruct evolutionary relationship among these catalases. These were also eukaryotic prokaryotic Phylogenies based on distances parsimony analysis show that all derive from a common ancestral gene can be divided into distinct groups. The first, major, group includes maizeCatl, barleyCat1, riceCatB most dicot second is an apparent dicot-specific encompassing tobaccoCat2 tomatoCat. third monocot-specific class including Cat3, barley Cat2, riceCatA. Cat2 loosely related first group. distinctive features are their extreme high codon bias at position low degree sequence similarity Similarities in intron positions for several support conclusion derivation gene. similar between bean human implies animal might derived progenitor sequence.