Crystallization and preliminary X-ray crystallographic analysis of the arsenic(Ⅲ) S-adenosylmethionine methyltransferase from rhodopseudanonas palustris
For the ubiquitous distribution and high toxicity in the ecosystem
arsenic contaminants have been a world-wide public health problem for decades.The enzyme ArsM has the ability of methylating the inorganic arsenite.To study mechanism of the process
the recombinant ArsM from Rhodopseudanonas palustris(RpArsM) was expressed
purified and crystallized.The RpArsM crystals were examined by X-ray crystallography on Beamline BL17U1 at Shanghai Synchrotron Radiation Facility
and the diffraction data were processed to a resolution of 2.0.The results show that the RpArsM crystals are of the P212121space group