?:definition
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Interacting selectively and non-covalently with a specific upstream regulatory DNA sequence (transcription factor recognition sequence or binding site) located in cis relative to the transcription start site (i.e., on the same strand of DNA) of a gene transcribed by RNA polymerase I. RNA polymerase I elements are referred to either enhancers or upstream control element (UCE, or alternately referred to as the upstream element). [GOC:txnOH, PMID:12865296, PMID:14969726, PMID:8057832]
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