TERMIUM Plus®

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Record 1 2026-05-22

English

Subject field(s)
  • Genetics
DEF

The region of the pre-mRNA [pre-messenger ribonucleic acid] intron containing the branch point.

CONT

The branch site is a short motif upstream of the polypyrimidine tract that includes a BP [branch point] adenosine, in 92% of human BPs.

CONT

Within introns, a donor site (5' end of the intron), a branch site (near the 3'  end of the intron) and an acceptor site (3' end of the intron) are required for splicing.

Key term(s)
  • branch-point site
  • branchpoint site
  • branch-point sequence
  • branchpoint sequence

French

Domaine(s)
  • Génétique
CONT

Le site donneur correspond à la charnière exon/intron. Le site de branchement, riche en bases pyrimidiques et qui contient une A [adénosine] est situé à une trentaine de bases en amont du site accepteur, qui correspond à la charnière intron/exon. [...] Lors de l'épissage, le site donneur vient se lier au site de branchement (formation du splicéosome) pour aboutir à la libération de l'intron sous forme de lasso et à la production de l'ARN [acide ribonucléique] messager (ARNm) avec deux exons raboutés [...]

OBS

Séquence de l'intron importante pour la réaction d'épissage.

Spanish

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