Figure 1
From: Identification of a novel anti-σE factor in Neisseria meningitidis
Transcriptional analysis of the NMB2140-NMB2145 region. A) Schematic representation of the organization of the NMB2140-NMB2145 region. Genes are indicated as open arrows that show the orientation and relative sizes of the putative ORFs. Primers used in RT-PCR are indicated by closed arrows. Sizes of calculated RT-PCR products are indicated below the black lines. The bent arrow indicates the promoter. B) RpoE is cotranscribed in the polycistronic operon NMB2140-2145 upon overexpressing of rpoE. RT-PCR analysis of transcription of the rpoE operon in H44/76 transformed with pNMB2144 before (- IPTG) and after (˜IPTG) induction of over expression of rpoE. Products obtained by RT-PCR were separated on agarose gels. Numbers on the right represent DNA marker sizes; lanes 1, 4,: RT-PCR product (calculated size 2421 nt) obtained with primer pair 2140-01/2143-02; lanes 2, 5,: RT-PCR product (calculated size 2123 nt) obtained with primer pair 2142-01/2144-02; lanes 3, 6,: RT-PCR product (calculated size 735 nt) obtained with primer pair 2144-01/2145-02. Reactions without reverse transcriptase did not yield any products (not shown).