Specifically , we identified three novel binding targets of AraC ( upstream of ytfQ and ydeN and within dcp ) and five novel AraC-regulated genes ( ytfQ , ydeN , ydeM , ygeA , and polB ) .
We also identified AraC-regulated genes that are transcribed due to read-through of inefficient Rho-independent terminators ( ygeA and polB ) .
It is possible that some or all of the novel AraC-regulated genes have as-yet-unidentified connections to arabinose metabolism , although this seems especially unlikely for polB , which encodes a well-characterized DNA polymerase .
polB are positively regulated by AraC due to partial read-through of Rho-independent terminators .
We did not detect regulation of polB by AraC in S. enterica .
Hence , polB regulation by AraC may be widely conserved .