Synergy between the NF-E1 erythroid-specific transcription factor and the CACCC factor in the erythroid-specific promoter of the human porphobilinogen deaminase gene.

Abstract excerpt

A 114-base-pair promoter fragment of the human porphobilinogen deaminase gene functioned in an erythroid-specific manner in transient transfection experiments. Site-directed mutagenesis of the binding site for the erythroid-specific transcription factor (NF-E1) or an adjacent CACCC motif abolished the promoter activity. Increasing the spacing between these sites progressively reduced promoter activity, but there...

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