Initiation of transcription of the erythroid promoter of the porphobilinogen deaminase gene is regulated by a cis-acting sequence around the cap site.

Abstract excerpt

Although the erythroid-specific promoter of human porphobilinogen deaminase [PBGD] gene has no TATA box, transcription is initiated at a single nucleotide. Using 5' and 3' deletions and point mutations, we have identified an element, located around the initiation site, which is necessary and sufficient for 'in vitro' accurate initiation of transcription. This 15 bp element extends 1 bp 5' and 14 bp 3' from the...

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