TLS Online TPP Program

#Question id: 4001


Which is not true about the lac repressor?

#Unit 3. Fundamental Processes
  1. Its gene is part of the lac operon and is transcribed along with lacZ, lacA and lacY.

  2. When it binds to DNA, it forms a loop-type structure.

  3. It likely blocks both RNA polymerase binding as well as transcription initiation.

  4. It binds to DNA by interaction of an α-helix with the major groove.