Transcription in Prokaryotes
Promoter elements: consensus
- -35 region TTGGACA & -10 region TATAAT
- -35 region recognized by s factor
- different s factors recognize different –35 sequences
- The s70 factor is housekeeping s factor
- it initiates transcription of most genes
- Alternative s factors
- small number of specific genes
- specific response
- one for the heat shock genes