Novel mechanisms of bacterial arsenic metabolism - arsenate reduction and arsenite oxidation

细菌砷代谢的新机制--砷酸盐还原和亚砷酸盐氧化。新的砷代谢细菌（即，砷酸盐呼吸和亚砷酸盐氧化），这是遗传学和生理学上独特的，已经从澳大利亚的砷污染地区分离出来。砷酸盐呼吸细菌，Chrysiogenes arsenatis，是特别感兴趣的，因为它是报道的唯一能够使用呼吸底物乙酸盐作为电子供体与砷酸盐呼吸的生物体。建议进行生理、生化和分子生物学研究，以更好地了解这些生物体代谢砷的机制。从这些研究中获得的知识将在砷生物修复系统的发展中具有世界范围的应用。

Novel mechanisms of bacterial arsenic metabolism - arsenate reduction and arsenite oxidation. Novel arsenic metabolising bacteria (i.e., arsenate respiring and arsenite oxidising), which are both phylogenetically and physiologically unique, have been isolated from arsenic-contaminated areas in Australia. The arsenate respiring bacterium, Chrysiogenes arsenatis, is of particular interest as it is the only organism reported able to respire with arsenate using the respiratory substrate acetate as the electron donor. It is proposed that physiological, biochemical and molecular biological studies be carried out to better understand the mechanisms by which these organisms metabolise arsenic. The knowledge gained from these studies will have worldwide application in the development of an arsenic bioremediation system.