title: Cloning, characterization and localization of CHS gene from blood orange, Citrus sinensis (L.) Osbeck cv. Ruby.
abstract: Chalcone synthase (CHS) is involved in the biosynthesis of anthocyanin. In this study, a full-length DNA of CHS gene (named as CsCHS-bo) was cloned from the blood orange, Citrus sinensis (L.) Osbeck cv. Ruby. The gene was 1,512 bp in size containing an open reading frame (1,176 bp) encoding 391 amino acids. Comparative and bioinformatic analyses revealed that the deduced protein of CsCHS-bo was highly homologous to CHS from other plant species. The protein of CsCHS-bo had four CHS-specific conserved motifs and a CHS-family signature sequence GFGPG. Phylogenetic analysis indicated that the protein of CsCHS-bo was in a subgroup with CHS of Ruta Palmatum. The CsCHS-bo was localized to the chromosomes 2p, 4p and 6p by an improved fluorescence in situ hybridization technique, indicating that at least three copies of CsCHS-bo were present in the genome.
authors.affiliation: School of Life Sciences, South China Normal University, Guangzhou, People's Republic of China.
authors.forename: Xu
authors.initials: X
authors.lastname: Lu
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.forename: Feng
authors.initials: F
authors.lastname: Gao
mesh_terms: D000217:Acyltransferases / Q000737:chemistry / Q000235:genetics*; D000595:Amino Acid Sequence; D032461:Chromosomes, Plant / Q000201:enzymology; D032084:Citrus sinensis / Q000201:enzymology* / Q000235:genetics*; D003001:Cloning, Molecular; D019295:Computational Biology; D018744:DNA, Plant / Q000235:genetics; D017343:Genes, Plant; D017404:In Situ Hybridization, Fluorescence; D008969:Molecular Sequence Data; D010802:Phylogeny; D017433:Protein Structure, Secondary; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
chemical_list: D018744:DNA, Plant; D000217:Acyltransferases; C020141:flavanone synthetase