PRE is a poor promoter; it lacks a -35 region and the -10 region is not close to the consensus sequence. How does RNA polymerase recognize it?
What will be an ideal response?
Ans: Transcription from the PRE promoter requires the presence of the positive regulator cII. cII binds to the promoter in the vicinity of -35 and facilitates the binding of RNA polymerase.
You might also like to view...
Haemophilus influenzae type b is a causative agent of meningitis in children.
Answer the following statement true (T) or false (F)
Which statement is NOT true about malaria?
a. The disease is caused by an evolving organism. b. It is transmitted from person to person by the bite of a mosquito. c. Its mortality rate is linked to the allele for Sickle Cell Anemia. d. Its greatest mortality rate is in Africa. e. The number of cases reported in North America is rising.
Steroid hormones typically move across the cell and nuclear membranes to bind to receptors in the nucleus
Indicate whether the statement is true or false
Deoxygenated blood is transported to the pulmonary capillaries of the lungs by the pulmonary veins; oxygenated blood is transported away from the pulmonary capillaries by the pulmonary arteries
Indicate whether the statement is true or false