Amos Oppenheim (31 October 1934 to 24 September 2006).
Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.Molecular Microbiology (Impact Factor: 4.96). 03/2008; 67(4):685-6. DOI:10.1111/j.1365-2958.2007.06097.x
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ABSTRACT: The polysaccharide capsule of Streptococcus pneumoniae is the main virulence factor making the bacterium resistant to phagocytosis. The galU gene of S. pneumoniae encodes a UDP-glucose pyrophosphorylase absolutely required for capsule biosynthesis. In silico analyses indicated that the galU gene is co-transcribed with the gpdA gene, and four putative promoter regions located upstream of gpdA were predicted. One of them behaved as a functional promoter in a promoter reporter system. It is conceivable that the sequence responsible for initiating transcription of gpdA-galU operon is an extended -10 site TATGATA(T/G)AAT. Semi-quantitative real-time reverse transcription PCR experiments indicated that galU was expressed mainly in the exponential phase of growth.FEMS Microbiology Letters 04/2012; 332(1):47-53. · 2.05 Impact Factor
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