Your browser version may not work well with NCBI's Web applications. More information here...
1: Syst Appl Microbiol. 1984;5:97-105.Links

The phylogenetic relationships of three sulfur dependent archaebacteria.

Woese CR, Gupta R, Hahn CM, Zillig W, Tu J.

Department of Genetics and Development, University of Illinois, Urbana 61801, USA.

Oligonucleotide catalogs have been determined for the 16S ribosomal RNAs of three sulfur dependent (i.e. "thermoacidophilic") archaebacteria--Sulfolobus acidocaldarius, S. solfataricus, and Thermoproteus tenax. The three form a group specifically related to one another, but are only distantly related to the other archaebacteria--i.e. the group comprising the methanogens, extreme halophiles, and (peripherially) the genus Thermoplasma. The three catalogs exhibit two features unique among bacteria: (1) an unusually high number of long pyrimidine runs, and (2) a remarkably high number of (post-transcriptionally) modified nucleotides.

PMID: 11541975 [PubMed - indexed for MEDLINE]