An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Concept Breadcrumbs

Preferred Term:

transcription initiation site

The first nucleotide of a transcribed DNA sequence where RNA polymerase (DNA-directed RNA polymerase) begins synthesizing the RNA transcript.
Concept Schemes:
Entry Terms:
  • transcription start site
Download this Concept:
RDF/XMLCreated 2018-02-05, last modified 2018-11-14