Regulation of Transcription In Prokaryotes

Operator

: regulatory region of the operon.

Activators

: increase the rate of transcription.

Small effector molecules

: binds to regulatory transcription factor and causes conformational change.

Polycistronic mRNA

: encodes more than one protein.

Transcriptional regulation

also involves small effector molecules.

Repressors

inhibit transcription

Activators

increase the rate of transcription

Small effector molecules

binds to regulatory transcription factor and causes conformational change

Operon in bacteria

a cluster of genes under transcriptional control of one promoter

Operator

regulatory region of the operon

Polycistronic mRNA

encodes more than one protein