Small nuclear rna part of protein complex that

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: right ones. small nuclear RNA part of protein complex that splices out introns. For transcription we need a coding sequence and a regulatory unit. RNA polymerase III transcribes tRNA, 5S rRNA, some snRNAs and scRNAs (cytoplasmic) 13 BIO 1140 Unit 2-2: Transcription Transcription Overview Begins as RNA polymerase binds to DNA DNA double helix begins to unwind RNA polymerase adds RNA nucleotides sequentially according to the DNA template Enzyme and completed RNA transcript release from DNA template Key terminology: (controls everything) Promoter: Control sequence initiates transcription Transcription unit: Portion of gene that is copied into RNA Terminator: Signals the end of transcription of a gene (copies everything) where to stop 14 BIO 1140 Unit 2-2: Transcription Transcription Overview: RNA polymerase catalyses the polymerization of ribonucleoside 5’-triphosphates(rNTP or NTP) does not require a primer, transcription is initiated de novo. initiates synthesis at ‘promoter’ sequences on DNA, upstream (5’) to the transcription start site. Other...
View Full Document

This note was uploaded on 03/26/2014 for the course BIO 1140 taught by Professor Fenwick during the Winter '07 term at University of Ottawa.

Ask a homework question - tutors are online