COMPILATION OF PSEUDOMONAD SEQUENCES PRESENT IN A DATABASE ON THE STRUCTURE OF RIBOSOMAL-RNA

The ribosomal RNA database in Antwerp (Belgium) offers extensive align ments of both small and large ribosomal subunit RNA (SSU/LSU rRNA) seq uences. In July 1996, the SSU rRNA and LSU rRNA sequence alignments co mprised respectively about 6400 and 350 sequences. The alignments are based on the secondary structure models adopted for both molecules, wh ich are corroborated by the observation of compensating mutations. Lit erature references, accession numbers, and detailed taxonomic informat ion are also compiled. Since part of this issue of Systematic and Appl ied Microbiology is dedicated to the pseudomonads in particular, all S SU rRNA and LSU rRNA sequences determined for these bacteria and avail able in the Antwerp databases are listed. The complete databases are a ccessible to the scientific community through anonymous ftp and World Wide Web. Our server also provides software for sequence alignment and phylogenetic tree construction.