Microbial Genomics Gateway (Popularity: ): Overview of the international efforts to sequence microbial genomes. Features a primer, publications, research data, and links to organism research centers. Procaryotic Database of Gene Regulation (Popularity: ): Focuses on pathogenic bacteria. Offers genetic sequences categorized in different ways. Includes links to sources with genome databases. Porphyromonas Gingivalis Genome Project (Popularity: ): Organism most strongly associated with human periodontal disease. Comprehensive resource with information on pathogenesis, genetic tools, cloned genes, photographs, and related links. EcoCyc: Encyclopedia of E. coli Genes and Metabolism (Popularity: ): Collaborative project aimed at compiling a knowledge base describing the genes and intermediary metabolism of this bacterium . Features publications and a table of enzymes.