LAC repressor bound to DNA. Molecular model of a LAC (lactose) repressor molecule (red and purple) interacting with bacterial DNA (deoxyribonucleic ac


LAC repressor bound to DNA. Molecular model of a LAC (lactose) repressor molecule (red and purple) interacting with bacterial DNA (deoxyribonucleic acid, green and turquoise). The LAC repressor inhibits the expression of genes that code for an enzyme which metabolizes lactose in bacteria. It is only present when lactose levels are low. This ensures that the bacteria only produce machinery used for the uptake and breakdown of lactose, when lactose is actually present.


Size: 4827px × 3620px
Photo credit: © LAGUNA DESIGN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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