title: Structural classification of plant chitinases: two subclasses in class I and class II chitinases.
abstract: For the classification of plant chitinases, phylogenetic relationships were analyzed besides the established classification of domain structure and C-terminal extension sequences. Two genetically different subclasses (high and low molecular weight) were found for the main structure of class I and class II chitinases in their phylogenetic trees. The genetic distance of these subclasses showed that the high molecular weight subclass may be an ancestral molecule.
authors.affiliation: Department of Biochemistry, School of Agriculture, Kyushu Tokai University, Kumamoto, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Araki
authors.forename: T
authors.initials: T
authors.lastname: Torikata
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002688:Chitinases / Q000737:chemistry* / Q000145:classification / Q000235:genetics; D008969:Molecular Sequence Data; D008970:Molecular Weight; D010802:Phylogeny; D010940:Plant Proteins / Q000737:chemistry* / Q000145:classification / Q000235:genetics
chemical_list: D010940:Plant Proteins; D002688:Chitinases