In genetics, a promoter is a DNA sequence that enables a gene to be transcribed. The promoter is recognized by RNA polymerase, which then initiates transcription.
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Promoter sequences
Prokaryotic promoters
In prokaryotes, the promoter consists of two short sequences at -10 and -35 position upstream of the gene, that is, prior to the gene in the direction of transctiption. <-- upstream downstream -->
5'-XXXXXXXPPPPPXXXXXXPPPPPXXXXGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGXXXX-3'
-35 -10 Gene to be transcribed
Eukaryotic promoters