4 Result(s)
within
English
Life Sciences
Biochemistry, general
Microbiology
Klaas J. Hellingwerf
Article
-
Article
Alkalispirillum mobile gen. nov., spec. nov., an alkaliphilic non-phototrophic member of the Ectothiorhodospiraceae
From cultures of the anoxygenic phototroph Halorhodospira halophila SL-1, an aerobic, gram-negative spirillum was isolated. This moderately halophilic, alkaliphilic bacterium was motile by means of a single pola...
-
Article
Effect of nitrogen sources on the regulation of extracellular lipase production in Acinetobacter calcoaceticus strains
Extracellular lipase production and lipA expression were studied in A.calcoaceticus strains in relation to the nitrogen sources. Addition of casamino-acids or tryptone improved 2–3 times lipase yield as compared ...
-
Article
Physiological regulation of competence induction for natural transformation in Acinetobacter calcoaceticus
Acinetobacter calcoaceticus induced competence for natural transformation maximally after dilution of a stationary culture into fresh medium. Competence was gradually lost during prolonged exponential growth and...
-
Article
A Kdp-like, high-affinity, K+-translocating ATPase is expressed during growth of Rhodobacter sphaeroides in low potassium media
Cells of the purple non-sulphur bacterium Rhodobacter sphaeroides express a high-affinity K+ uptake system when grown in media with low K+ concentrations. Antibodies againts the catalytic KdpB protein or the whol...
