Bernadette Lewis

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Symbiotic nitrogen fixation by Rhizobium meliloti requires the developmentally specific expression of certain bacterial genes. One set of these genes encodes the subunits of nitrogenase, the enzyme responsible for the reduction of atmospheric dinitrogen to ammonia, and another set consists of closely linked genes also essential for nitrogen fixation.(More)
Plummer, Gordon (Baylor University College of Medicine, Houston, Tex.), and Brian Lewis. Thermoinactivation of herpes simplex virus and cytomegalovirus. J. Bacteriol. 89:671-674. 1965.-The stability of herpes simplex virus and of human cytomegalovirus at 4, 22, 36, and 50 C was studied. A plateau or lag phase, during which no loss of viability was detected,(More)
Understanding the process of carcinogenesis is key to developing therapies which might interrupt or reverse tumor onset and progression. Cell growth and death signals are dependent not only upon molecular mechanisms within a cell but also upon external stimuli such as hormones, cell–cell signaling, and extracellular matrix. Mouse models can be used to(More)
To explain the requirement for anaerobic conditions in the induction of biodegradative L-threonine dehydratase in Escherichia coli, Crookes strain, measurements of cyclic AMP (cAMP) were made during aerobic and anaerobic growth and upon an aerobic-to-anaerobic transition. Internal cAMP levels were similar (5 to 10 muM) throughout exponential growth, whether(More)
Xylella fastidiosa (Xf) is an important pathogen causing diseases on several economically important crops, such as grape and almond, in California. Despite recent intensive efforts to study this nutritionally fastidious pathogen, many biological traits of the bacterium, such as bacteriophages, remain unclear and deserve more research attention. We have(More)
We present the second report of combined oxidative phosphorylation deficiency-9. The infant presented in the neonatal period with poor feeding, lactic acidosis and sensorineural hearing loss. He subsequently developed a lethal hypertrophic cardiomyopathy during infancy. Cirrhosis and interstitial nephritis were identified at autopsy. Exome sequencing has(More)
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