TY - JOUR
T1 - Functional expression of the particulate methane mono-oxygenase gene in recombinant Rhodococcus erythropolis
AU - Gou, Zhongxuan
AU - Xing, Xin Hui
AU - Luo, Mingfang
AU - Jiang, Hao
AU - Han, Bing
AU - Wu, Hao
AU - Wang, Lei
AU - Zhang, Fei
PY - 2006/10
Y1 - 2006/10
N2 - In order to construct an expression system for the particulate methane mono-oxygenase (pMMO) gene (pmo), the structural gene cluster pmoCAB amplified from Methylosinus trichosporium OB3b was inserted into a shuttle vector pBS305 under the control of a dsz promoter and transformed into Rhodococcus erythropolis LSSE8-1. A stable transformant was successfully obtained using ethane as the sole carbon source. Fluorescence in situ hybridization results showed that the dsz promoter allowed the pmo genes to be transcribed in the recombinant strain. The effects of Cu2+ and Zn2+ concentrations on cell growth and pMMO activity in ethane-containing medium were examined. It was discovered that 7.5 μM Cu2+ and 1.8 μM Zn2+ were suitable to achieve high cell concentration and pMMO activity, but the amount of methanol accumulated during methane oxidation by the recombinant strain was still low.
AB - In order to construct an expression system for the particulate methane mono-oxygenase (pMMO) gene (pmo), the structural gene cluster pmoCAB amplified from Methylosinus trichosporium OB3b was inserted into a shuttle vector pBS305 under the control of a dsz promoter and transformed into Rhodococcus erythropolis LSSE8-1. A stable transformant was successfully obtained using ethane as the sole carbon source. Fluorescence in situ hybridization results showed that the dsz promoter allowed the pmo genes to be transcribed in the recombinant strain. The effects of Cu2+ and Zn2+ concentrations on cell growth and pMMO activity in ethane-containing medium were examined. It was discovered that 7.5 μM Cu2+ and 1.8 μM Zn2+ were suitable to achieve high cell concentration and pMMO activity, but the amount of methanol accumulated during methane oxidation by the recombinant strain was still low.
KW - Functional expression
KW - Methylosinus trichosporium OB3b
KW - Particulate methane mono-oxygenase
KW - Rhodococcus erythropolis
UR - http://www.scopus.com/inward/record.url?scp=33748759246&partnerID=8YFLogxK
U2 - 10.1111/j.1574-6968.2006.00363.x
DO - 10.1111/j.1574-6968.2006.00363.x
M3 - Article
C2 - 16978347
AN - SCOPUS:33748759246
SN - 0378-1097
VL - 263
SP - 136
EP - 141
JO - FEMS Microbiology Letters
JF - FEMS Microbiology Letters
IS - 2
ER -