title: Degradation of microcystin-LR and RR by a Stenotrophomonas sp. strain EMS isolated from Lake Taihu, China.
abstract: A bacterial strain EMS with the capability of degrading microcystins (MCs) was isolated from Lake Taihu, China. The bacterium was tentatively identified as a Stenotrophomonas sp. The bacterium could completely consume MC-LR and MC-RR within 24 hours at a concentration of 0.7 microg/mL and 1.7 microg/mL, respectively. The degradation of MC-LR and MC-RR by EMS occurred preferentially in an alkaline environment. In addition, mlrA gene involved in the degradation of MC-LR and MC-RR was detected in EMS. Due to the limited literature this gene has rare homologues. Sequencing analysis of the translated protein from mlrA suggested that MlrA might be a transmembrane protein, which suggests a possible new protease family having unique function.
authors.affiliation: Institute of Food Safety and Quality, Jiangsu Academy of Agricultural Sciences, Nanjing, China. chenjian@jaas.ac.cn
authors.forename: Jian
authors.initials: J
authors.lastname: Chen
authors.forename: Liang Bin
authors.initials: LB
authors.lastname: Hu
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.forename: Shao Hua
authors.initials: SH
authors.lastname: Yan
authors.forename: Jing Dong
authors.initials: JD
authors.lastname: Yang
authors.forename: Yan Feng
authors.initials: YF
authors.lastname: Xue
authors.forename: Zhi Qi
authors.initials: ZQ
authors.lastname: Shi
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D001673:Biodegradation, Environmental; D002681:China; D007536:Isomerism; D060106:Lakes / Q000382:microbiology; D052998:Microcystins / Q000737:chemistry / Q000378:metabolism*; D008969:Molecular Sequence Data; D020588:Stenotrophomonas / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D052998:Microcystins; C078588:microcystin