Identification of relative location As promoters are typically immediately adjacent to the gene in question, positions in the promoter are designated relative to the transcriptional start site, where transcription of DNA begins for a particular gene (i.e., positions upstream are negative numbers counting back from -1, for example -100 is a position 100 base pairs upstream).
Identification of relative location As promoters are typically immediately adjacent to the gene in question, positions in the promoter are designated relative to the. transcript.ional? start site, where transcript.ion of DNA begins for a particular gene (i.e., positions upstream are negative numbers counting back from -1, for example -100 is a position 1!00 base pairs upstream).