Transcription start site
= Transcription start site
The <DNA> position corresponding to the first incorporated <ribonucleotide> in a primary transcript. A processed $5'$ end need not identify a <transcription start site>.
= Transcription start site
The <DNA> position corresponding to the first incorporated <ribonucleotide> in a primary transcript. A processed $5'$ end need not identify a <transcription start site>.