title: Differences in substrate selectivities of the SPOUT superfamily of methyltransferases.
abstract: Since the SPOUT superfamily was defined by homology between the SpoU and TrmD families [Anantharaman, V. et al., J. Mol. Microbiol. Biotechnol., 4, 71-75 (2002)], many crystal structures have been solved and numerous new homologous sequences have been found in the superfamily. Therefore, nowadays, we can consider enzyme function and/or evolution process of the SPOUT superfamily members using not only amino acid sequences but also protein structures. Recently, a bioinformatics research on SPOUT superfamily proposed existences of new member proteins [COG1756, COG1772, COG4080, and COG1901], and provided a structural and evolutionary classification of the proteins [Tkaczuk, K.L. et al., BMC Bioinformatics, 8:73 (2007)], which serves as a guide for studies on the SPOUT family in future. In this meeting, we report a new approach using a flexible protein structure alignment algorithm (FATCAT) to analyze the structures of SPOUT superfamily proteins, and discuss differences in substrate selectivities of methyltransferases in the superfamily.
authors.affiliation: Department of Materials Science and Biotechnology, Graduate School of Science and Engineering Ehime University, Bunkyo 3 Matuyama 790-8577, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Toyooka
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Hori
mesh_terms: D000465:Algorithms; D000595:Amino Acid Sequence; D017124:Conserved Sequence; D017434:Protein Structure, Tertiary; D016415:Sequence Alignment; D013379:Substrate Specificity; D012359:tRNA Methyltransferases / Q000737:chemistry* / Q000145:classification / Q000378:metabolism
chemical_list: D012359:tRNA Methyltransferases