Promoters for e. coli genes that are transcribed by the "housekeeping" rna polymerase holoenzyme can vary, but which of the following is not a part of the promoter dna? promoters for e. coli genes that are transcribed by the "housekeeping" rna polymerase holoenzyme can vary, but which of the following is not a part of the promoter dna? the discriminator element the rut element the up-element the -35 element the -10 element submitrequest answer provide feedback next

Rut element

Explanation:

Promoters are the sequences that serve as a binding site for RNA polymerase and regulate the transcription of the adjacent gene. Bacterial promoters have some conserved sequences. Two of these sequences are present at -10 and -35 positions and serve as an interaction site for the sigma subunit of RNA polymerase holoenzyme. The consensus sequence at -10 position is (5')TATAAT(3') and the consensus sequence at the -35 region is (5')TTGACA(3').

The UP element, upstream promoter element is an AT-rich sequence present between -40 and -60 positions in the promoters of some genes. The UP elements also serve as a binding site for the sigma subunit of RNA polymerase. The promoter sequence present on the downstream side of the -10 element is called the discriminator sequence.

The rho-dependent terminators use a CA-rich sequence called a rut (rho utilization) element. The sequence serves as a binding site for rho protein during termination.

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.