University of British Columbia, Vancouver, BC, Canada.
Science. 2011 Jun 3;332(6034):1149; author reply 1149. doi: 10.1126/science.1201482. Epub 2011 May 27.
Wolfe-Simon et al. (Research Articles, 3 June 2011, p. 1163; published online 2 December 2010) reported that bacterium GFAJ-1 can grow by using arsenic instead of phosphorus. However, the presence of contaminating phosphate in the growth medium, as well as the omission of important DNA purification steps, cast doubt on the authors' conclusion that arsenic can substitute for phosphorus in the nucleic acids of this organism.
沃尔夫-西蒙等人（研究文章，2011 年 6 月 3 日，第 1163 页；网上公布于 2010 年 12 月 2 日）报告说，一种名为 GFAJ-1 的细菌可以利用砷而不是磷来生长。然而，生长培养基中存在污染的磷酸盐，以及省略了重要的 DNA 纯化步骤，这使得人们对作者的结论产生了怀疑，即砷可以替代该生物体核酸中的磷。
