TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

TRANSCRIPTION INITIATION SITE [1 record]

Record 1 2004-12-10

English

Subject field(s)
  • Genetics
  • Molecular Biology
DEF

A nucleotide, located on DNA to be transcribed, where the transcription of RNA begins.

CONT

The transcribing enzyme, RNA polymerase, binds to a promoter region that (in the bacterium Escherichia coli) has the specific sequences shown (or minor variation of them) about 10 base pairs and 35 base pairs before a transcription initiation site; beyond the end of the structural gene a termination region causes the polymerase to cease transcription.

OBS

By convention, this "first nucleotide" is numbered +1.

Key term(s)
  • transcription-initiation site

French

Domaine(s)
  • Génétique
  • Biologie moléculaire
DEF

Nucléotide, situé sur l'ADN, où commence la transcription de l'ARN.

CONT

Le début de la transcription commence au site d'initiation, variable chez les espèces mais habituellement caractérisé par [une base A ou G].

OBS

Par convention on donne à ce «premier nucléotide» le chiffre +1.

Spanish

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