LM6-2 - Overviewoftranscription Prokaryoticgenomestructure

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Overview of transcription • Prokaryotic genome structure • RNAP (RNA polymerase) structure/function • Promoters • Termination of transcription 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Organization of Bacterial genes (Figs. 12.19, 12.20) • In bacteria RNAP transcribes genes for rRNAs  (ribosomal RNAs), tRNAs and mRNAs (next slide) • In prokaryotes several genes with associated functions  are grouped together on the chromosome and are  transcribed as a unit (polycistronic transcripts) • (Above) tRNAs and rRNAs  are located in clusters along  the bacterial chromosome 2
Background image of page 2
Organization of Bacterial mRNA genes (Figs.  12.20) •  Polycistronic mRNAs in Bacteria contain multiple genes  that are co-transcribed, with protein-coding regions that are  each translated simultaneously • Eukaryotic mRNAs are monocistronic (1 gene/transcript),  contain introns that interrupt the coding sequence and must  be removed before the mRNA can be translated 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Structure of  E. coli 
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

LM6-2 - Overviewoftranscription Prokaryoticgenomestructure

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online