#Question id: 4448
#Unit 3. Fundamental Processes
Three defined steps in a transcription cycle; choose correct one
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1a. Closed complex |
In this form, the DNA remains double-stranded, and the enzyme is bound to one face of the helix. I |
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1b. Open complex |
In which the DNA strands separate over a distance of 13 bp around the start site to form the transcription bubble. In the next stage of initiation, |
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2. Promoter escape |
Incorporation of the first 10 or so ribonucleotides is a rather inefficient process, and at that stage, the enzyme often releases short transcripts and then begins synthesis again |
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3. Initial transcribing complex. |
Once an enzyme makes a transcript longer than 10 nucleotides, it is said to have |
#Question id: 4449
#Unit 3. Fundamental Processes
Promoters recognized by polymerase containing s70 share the following characteristic structure;
#Question id: 4450
#Unit 3. Fundamental Processes
According to the correlation between promoter strength and sequence, in all these promoters which one is seems like very weak promoter or non-existing in any organism
#Question id: 4451
#Unit 3. Fundamental Processes
Promoter consensus sequence was derived by aligning 300 sequences known to function as s70 promoters and ascertaining the most common base found at each position in the –35 and –10 hexamers are,
#Question id: 4452
#Unit 3. Fundamental Processes
A final DNA element that binds RNA polymerase is sometimes found just downstream from the –10 element. This element is called the
#Question id: 4453
#Unit 3. Fundamental Processes
Correct statements about regions of the s70 factor which can be divided into four regions called s region 1 through s region 4;