%0 Journal Article
%T Effects of nicotinamide and riboflavin on the biodesulfurization activity of dibenzothiophene by Rhodococcus erythropolis USTB-03<br>
%A YAN Hai
%A SUN Xudong
%A XU Qianqian
%A MA Zhao
%A XIAO Chengbin
%A Ning Jun
%A <br>
%J 环境科学学报(英文版)
%D 2008
%I 
%X Rhodococcus erythropolis USTB-03 is a promising bacterial strain for the biodesulfurization of dibenzothiophene (DBT) via a sulfurspecific pathway in which DBT is converted to 2-hydroxybiphenyl (2HBP) as an end product. The effects of nicotinamide and riboflavin on the sulfur specific activity (SA) of DBT biodesulfurization by R. erythropolis USTB-03 were investigated. Both nicotinamide and riboflavin were found to enhance the expression of SA, which was not previously reported. When R. erythropolis USTB-03 was grown on a medium containing nicotinamide of 10. 0 mmol or riboflavin of 50. 0 μnol, SA was raised from 68. 0 or so to more than 130 mmol 2HBP/(kg dry cells. h). When R. erythropolis USTB-03 was grown in the presence of both nicotinamide of 5. 0 mmol and riboflavin of 25. 0 μmol, SA was further increased to 159. 0 mmol 2HBP/(kg dry cells. h). It is suggested that the biological synthesis of reduced form of flavin mononucleotide (FMNH2), an essential coenzyme for the activities of biodesulfurization enzyme Dsz C and A, might be enhanced by nicotinamide and riboflavin, which was responsible for the increased SA of R. erythropolis USTB-03.
%K biodesulfurization
%K dibenzothiophene
%K nicotinamide
%K Rhodococcus erythropolis USTB-03
%K riboflavin<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=A06149B29E5A2E062D70D200D80CEE15&yid=67289AFF6305E306&vid=A04140E723CB732E&iid=94C357A881DFC066&sid=9E7C0CB25117E09B&eid=54E527C5B72E59D8&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=27