Control Of Dna And Protein Flashcards
What happens when ecoli consume lactose
Provide energy for metabolism
What produces the enzymes needed to consume lactose
Structural genes
What happens in the Induced state
The lac depressor is not bound to operator site
What happens when lactose is present
Called positive control
Alters shape of repressir so it doesn’t fit into operator
RNA polymerase finds promoters and move along DNA
mRNA transcript to produce 3 protons
What gone in repressed state?
Depressor is bound to operator
What happens hen lactose is not present?
Repressor protein binds a to operator creating a road block that prevents rna polymerase from moving along DNA
RNA polymerase is unable to transcribe structural genes
How does tryptophan work?
Opposite of lactose
What do regulatory genes make
Repressor protein
