title: Functional characterization of sll0659 from Synechocystis sp. PCC 6803.
abstract: Synechocystis sp. PCC 6803 lacks a gene for the any known types of lycopene cyclase. Recently, we reported that Sll0659 (unknown for its function) from Synechocystis sp. PCC6803 shows similarity in sequence to a lycopene cyclase gene-CruA from Chlorobium tepidum. To test, whether sll0659 encoded protein serves as lycopene cyclase, in this study, we investigated the carotenoids of the wild types and mutants. In the sll0659 deleted mutant, there is no blockage at the lycopene cyclization step. Our results demonstrate that sll0659 does not affect lycopene cycilzation. However, the ultrastructure of mutants suggests the involvement or necessity of sll0659 in the cell division.
authors.affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P.R. China.
authors.forename: Cheng-Wei
authors.initials: CW
authors.lastname: Liang
authors.forename: Xiao-Wen
authors.initials: XW
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Tian
authors.forename: Song
authors.initials: S
authors.lastname: Qin
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D001483:Base Sequence; D002455:Cell Division / Q000235:genetics / Q000502:physiology; D041883:Chlorobium / Q000201:enzymology* / Q000235:genetics; D002851:Chromatography, High Pressure Liquid; D003001:Cloning, Molecular; D003500:Cyclization; D004591:Electrophoresis, Polyacrylamide Gel; D005798:Genes, Bacterial; D019753:Intramolecular Lyases / Q000235:genetics / Q000378:metabolism*; D046529:Microscopy, Electron, Transmission; D009154:Mutation; D016133:Polymerase Chain Reaction; D046939:Synechocystis / Q000166:cytology / Q000201:enzymology* / Q000235:genetics; D019207:beta Carotene / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D019207:beta Carotene; D019753:Intramolecular Lyases; C070925:lycopene cyclase-isomerase