Methylarcula (Paperback)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In taxonomy, Methylarcula is a genus of the Rhodobacteraceae.The Proteobacteria are a major group (phylum) of bacteria. They include a wide variety of pathogens, such as Escherichia, Salmonella, Vibrio, Helicobacter, and many other notable genera. Others are free-living, and include many of the bacteria responsible for nitrogen fixation.