Lac Operon

Description

(Biology Exam 3) Mind Map on Lac Operon, created by izzy5605 on 11/20/2013.
izzy5605
Mind Map by izzy5605, updated more than 1 year ago
izzy5605
Created by izzy5605 about 9 years ago
241
0

Resource summary

Lac Operon
  1. involved in lactose breakdown in E.coli
    1. if no lactose, a repressor is bound to operator, blocking transcription
      1. RNAP's binding to DNA is controlled
        1. binds at promoter
      2. if lactose present, it binds to the receptor and causes a shape change such so it no longer binds to the operator and thus RNAP (Rna Polymerase) can transcribe the genes
      3. E. coli
        1. prefers glucose for energy
        2. B-gal
          1. used to cleave glycosidic bond in lactose
            1. when cleaved makes glucose and galactose
            2. made by Lac z of the lac operon
            3. Lac Y is gene for creating B-galactosidepermease
              1. plac is sometimes called the promoter
                1. Laci is the gene that encodes for the repressor protein
                  1. binds to the operator and represses function of this operon
                    1. Pi is promoter of Laci
                      1. always made and binding to the operator
                      2. blocks RNA polymerase
                        1. Laci is bound to the DNA when lactose is not present
                          1. when lactose is present it binds to the repressor which then falls off the repressor
                        2. Lac A is gene for transacetylase

                          Media attachments

                          Show full summary Hide full summary

                          Similar

                          Types of gene mutation _ Regulation of Gene expression
                          007842-Stuart Denton
                          DNA and RNA
                          izzy5605
                          Gene expression and lac operon Biology Alevel
                          Isabel O'Neill
                          Operón lac
                          richi3f
                          DNA Binding Proteins
                          izzy5605
                          CAP and cAMP
                          izzy5605
                          Template and Coding Strand
                          izzy5605
                          genes
                          izzy5605
                          different TFs
                          izzy5605
                          reporter genes
                          izzy5605
                          Mutations
                          izzy5605