Bacteria

Sediment samples from the Cariaco Trench (DSDP Leg 15) and the Walvis Ridge (DSDP Leg 75) ranging in age from Holocene to Upper Miocene (approximately 8 million years BP) and in depth from 5 to 258 m were extracted with basic sodium pyrophosphate and the extract analyzed for enzymic activity. Since no dehydrogenase, alkaline phosphatase or esterase activity was found, it is estimated from these data that the maximum bacterial population does not exceed 1000 cells per gram dry sediment.

Membrane fatty acids were extracted from a sediment core above marine gas hydrates at Hydrate Ridge, NE Pacific. Anaerobic sediments from this environment are characterized by high sulfate reduction rates driven by the anaerobic oxidation of methane (AOM). The assimilation of methane carbon into bacterial biomass is indicated by carbon isotope values of specific fatty acids as low as -103 per mill. Specific fatty acids released from bacterial membranes include C 16:1 omega 5c , C 17:1 omega 6c , and cyC 17:0 omega 5,6 , all of which have been fully characterized by mass spectrometry.

the aim of EcoliWiki is to generate community-based pages about everything related to non-pathogenic E. coli, its phages, plasmids, and mobile genetic elements

PATRIC (PathoSystems Resource Integration Center) provides rich data and analysis tools for all bacterial species with an emphasis on the bacterial Orders that include NIAID category A-C priority and emerging/re-emerging pathogens

The goal of creating the Human Oral Microbiome Database (HOMD) is to provide the scientific community with comprehensive information on the approximately 600 prokaryote species that are present in the human oral cavity. The majority of these species are uncultivated and unnamed, recognized primarily by their 16S rRNA sequences. The HOMD presents a provisional naming scheme for the currently unnamed species so that strain, clone, and probe data from any laboratory can be directly linked to a stably named reference entity.

Istanbul, Turkey

This is a quick guide to the identification of bacteria commonly encountered in clinical diagnostic microbiology laboratories. It does not include reference to important pathogens that are difficult to isolate, for example chlamydia, mycoplasmas and rickettsias, although species in these genera may cause serious disease - University of Leeds, UK

this database provides infomation to facilitate a multigenic sequence analysis in Pseudomonas taxonomy, phylogeny and evolution. The database has been elaborated with a collection of 423 strain names; representing approximately 99 species of the Pseudomonas genus encompassing plant associated and phytopathogenic bacteria, bacteria of medical importance, marine bacteria and various groups of biotechnological interest (such as nitrogen fixers, denitrifiers, biodegraders, etc.).

Villars-sur-Ollon, Ollon, Switzerland

Tel Aviv, Israel