In order to gain some information on the comparative biochemistry of the Streptomyces, an investigation of the nature of the cell wall has been undertaken. There are only few data relating to the chemical composition of the actinomycetes. Thus, Avery and Blank (1954) found that representative species of Actinomyces, Nocardia, Streptomyces, and Micromonospora were all devoid of chitin and cellul...

Bacteria regulate chromosome replication and segregation tightly with cell division to ensure faithful segregation of DNA to daughter generations. The underlying mechanisms have been addressed in several model species. It became apparent that bacteria have evolved quite different strategies to regulate DNA segregation and chromosomal organization. We have investigated here how the actinobacteri...

A gram-positive branched bacterium isolated from a trichloroethylene-degrading consortium mineralized vinyl chloride in growing cultures and cell suspensions. Greater than 67% of the [1,2-14C]vinyl chloride was mineralized to carbon dioxide, with approximately 10% of the radioactivity appearing in cell biomass and another 10% appearing in 14C-aqueous-phase products.

Propane-induced cometabolic degradation of n-nitrosodimethylamine (NDMA) by two propanotrophs is characterized through kinetic, gene presence, and expression studies. After growth on propane, resting cells of Rhodococcus sp. RR1 possessed a maximum transformation rate (v(max,n)) of 44 ± 5 µg NDMA (mg protein)(-1) h(-1); the rate for Mycobacterium vaccae (austroafricanum) JOB-5 was modestly lowe...

The Tibetan Plateau, also termed ‘the Third Pole’ harbors the largest number of high-altitude lakes in world. Due to presence extreme conditions such as low temperature and oligotrophy, Plateau share environmental features common with polar regions. However, extent which these environments are analogous, or indeed whether they harbor similar microbial communities a high level endemic species is...