Link to Pubmed [PMID] – 3072199
EMBO J. 1988 Dec;7(13):4379-81
Escherichia coli RNA polymerase is shown to induce bending or an increased flexibility of the promoter DNA. This is a specific effect of holoenzyme (core enzyme and sigma-factor). The centre of the flexibility is 3 bp upstream of the initiation point of RNA synthesis. This flexibility or bending is maintained during RNA synthesis by core enzyme.