Journal
MICROBIAL PATHOGENESIS
Volume 37, Issue 3, Pages 163-167Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.micpath.2004.06.003
Keywords
RT-PCR; mRNA quantitation; promoter differences; multi-modal gene regulation; Mexican Helicobacter pylori
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Funding
- NIAID NIH HHS [R01 AI42081] Funding Source: Medline
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Up to 28-fold differences in vacA expression in Helicobacter pylori strains grown in vitro were demonstrated by real time quantitative RT-PCR. These large differences in expression were unrelated to putative - 35 and - 10 motifs or to other untranslated sequences upstream of the ATG start site. The lack of correlation between promoter sequences and the vacA expression levels suggest the potential existence of a bacterial strain-specific factor, as earlier proposed by others on the basis of reporter gene fusions. (C) 2004 Elsevier Ltd. All rights reserved.
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