Lac operon pdf
- lac operon when glucose is present
- what happens to lac operon when glucose is present
- lac operon when glucose and lactose are present
- in bacteria when glucose is present the lac operon functions less more
Positive regulation of lac operon.
lac operon
Set genes encoding proteins and enzymes for lactose metabolism
"lac Y" redirects here. Not to be confused with lacY or Lacy.
"lac I" redirects here.
Lac operon function
Not to be confused with lacI or Laci.
The lactose operon (lac operon) is an operon required for the transport and metabolism of lactose in E. coli and many other enteric bacteria. Although glucose is the preferred carbon source for most enteric bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available through the activity of β-galactosidase.[1]Gene regulation of the lac operon was the first genetic regulatory mechanism to be understood clearly, so it has become a foremost example of prokaryoticgene regulation.
It is often discussed in introductory molecular and cellular biology classes for this reason. This lactose metabolism system was used by François Jacob and Jacques Monod to determine how a biological cell knows which enzyme to synthesize.
Their work on the lac operon won them the Nobel Prize in Physiology in 1965.[1]
Most bacterial c
- how does glucose affect the lac operon
- what happens to the lac operon when glucose and lactose are present