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Degradation of Microcystin-LR and RR by a Stenotrophomonas sp Strain EMS Isolated from Lake Taihu, China

文献类型: 外文期刊

作者: Chen, Jian 1 ; Hu, Liang Bin 2 ; Zhou, Wei 1 ; Yan, Shao Hua 3 ; Yang, Jing Dong 1 ; Xue, Yan Feng 1 ; Shi, Zhi Qi 1 ;

作者机构: 1.Jiangsu Acad Agr Sci, Inst Food Safety & Qual, Nanjing 210014, Peoples R China

2.Henan Inst Sci & Technol, Sch Food, Xinxiang 453003, Peoples R China

3.Minist Agr, Key Lab Food Safety Monitoring & Management, Nanjing 210014, Peoples R China

4.Jiangsu Acad A

关键词: degradation;microcystin-LR;microcystin-RR;cyanobacteria;EMS;mlrA

期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.923; 五年影响因子:6.132 )

ISSN: 1422-0067

年卷期: 2010 年 11 卷 3 期

页码:

收录情况: SCI

摘要: 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 mu g/mL and 1.7 mu g/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.

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