GIB (Genome Information Broker for Microbial Genomes) provides a comprehensive view of the complete microbial genome sequences.Because the genome sequence data of Methanosarcina mazei Goe1 ,Xanthomonas campestris pv. campestris ATCC 33913 and Xanthomonas axonopodis pv. citri 306 were released, we incorporated them to GIB, and now you can search those data.
Methanosarcina mazei Goe1
  Institute: Goettingen Genomics Laboratory
  Reference: The genome of Methanosarcina mazei: Evidence for lateral gene transfer between Bacteria and Archaea, J. Mol. Microbiol.Biotechnol. (2002) In press
Xanthomonas campestris pv. campestris ATCC 33913 and
Xanthomonas axonopodis pv. citri 306
  Institute: University of Sao Paulo
  Reference: Comparison of the genomes of two Xanthomonas pathogens with differing host specificities, Nature 417 (6887), 459-463(2002)