DNA-binding transcriptional dual regulator ModE

UniProtKB accession:  P0A9G8

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UniProtKB description:  Functions as an intracellular molybdate sensor. The ModE-Mo complex acts as a repressor of the modABC operon, which is involved in the transport of molybdate (PubMed:8550508). Binds modA promoter DNA in the absence of molybdate, however molybdate binding confers increased DNA affinity (PubMed:9210473, PubMed:9044285). Binds the promoter of moaA activating its transcription; binding is not enhanced by molybdate (PubMed:9044285). The protein dimer binds the consensus palindrome sequence 5'-TATAT-N7-TAYAT-3' and a variant 5'-TGTGT-N7-TGYGT-3' (PubMed:9210473, PubMed:9044285, PubMed:16205910). Acts as a regulator of the expression of 67 genes, many of which encode molybdoenzymes, acts both directly and indirectly (PubMed:9466267, PubMed:10206709, PubMed:16205910). ModE also binds tungstate (PubMed:9210473, PubMed:11259434).