RETRACTED: Role of the Sigma Factor in Transcription Initiation in the Absence of Core RNA Polymerase

This article has been retracted at the request of the authors. Please see http://www.elsevier.com/locate/withdrawalpolicy.Reason: The authors reported in this paper a series of experiments aimed at elucidating the exact function of the bacterial transcriptional specificity factor sigma (σ), and the importance of core RNA polymerase in modulating σ function. The authors recently identified errors where original data were processed inappropriately by the first author; these errors affect several of the figures. Thus, the authors wish to retract this paper. The authors continue to stand by the conclusions of the paper and experiments replicating these results and conclusions will be verified and submitted for peer review at a future date. The authors are happy to provide reagents to anyone who wishes to repeat the experiments and would like to apologize to the scientific community for any inconvenience these errors may have caused