Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 22 December 2006:
Vol. 314. no. 5807, p. 1837
DOI: 10.1126/science.314.5807.1837k
Prev | Table of Contents | Next

This Week in Science

From a fragment of DNA obtained during a metagenomic study of a microbial community living in acid mine drainage, Baker et al. (p. 1933) have obtained evidence for a low-abundance lineage of archaea they call ARMAN (Archaeal Richmond Mine Acidophilic Nanoorganism). The DNA fragment carries a ribosomal RNA gene that indicates the organism's deep divergence from other archaeal groups. Members of the ARMAN group carry a gene encoding a pyrophosphatase that can be used in extracting energy from pyrite. Visualization with fluorescent in situ hybridization has revealed very small, ribosome-packed, irregularly shaped cells.




To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)