Difference Between TATA and CAAT Box

What is the Difference Between TATA and CAAT Box? TATA box is a conserved nucleotide region found about 25-30 base pairs upstream to the transcription initiation site. On the other hand, CAAT box is a conserved region of nucleotides found about 75-80 base pairs upstream to the transcription initiation site.

1. What does the CAAT box do?
2. What is TATA box in transcription?
3. At what position are the TATA box CAAT box and GC box found respectively?
4. Is the TATA box on the coding strand?
5. What is the difference between enhancer and promoter?
6. How far upstream is the TATA box?
7. Is the TATA box a codon?
8. What happens if there is no TATA box?
9. What is the difference between enhancers and silencers?
10. What is a core promoter?
11. What is the consensus sequence of the pribnow box?

What does the CAAT box do?

The CAAT box signals the binding site for the RNA transcription factor, and is typically accompanied by a conserved consensus sequence. It is an invariant DNA sequence at about minus 70 base pairs from the origin of transcription in many eukaryotic promoters.

What is TATA box in transcription?

A TATA box is a DNA sequence that indicates where a genetic sequence can be read and decoded. It is a type of promoter sequence, which specifies to other molecules where transcription begins. ... The TATA box is named for its conserved DNA sequence, which is most commonly TATAAA.

At what position are the TATA box CAAT box and GC box found respectively?

The promoter of the human POMC gene contains typical TATA and CAAT boxes 28 and 62 bp, respectively, upstream from the transcription start site.

Is the TATA box on the coding strand?

Promoters in humans

Many eukaryotic promoters have a sequence called a TATA box. ... It contains a TATA box, which has a sequence (on the coding strand) of 5'-TATAAA-3'. The first eukaryotic general transcription factor binds to the TATA box.

What is the difference between enhancer and promoter?

An enhancer is a sequence of DNA that functions to enhance transcription. A promoter is a sequence of DNA that initiates the process of transcription. A promoter has to be close to the gene that is being transcribed while an enhancer does not need to be close to the gene of interest.

How far upstream is the TATA box?

The TATA-box, found commonly in eukaryotic promoters, is typically a T/A-rich sequence, located about 25 to 30 bp upstream of the transcription start site.

Is the TATA box a codon?

Any DNA sequence with a TATA-box located 20-30 base-pairs before a start codon is a possible protein source. The distance between the last A in TATAA and the first A in ATG must be 20-30 nucleotides in this problem. A TATA box is a predictor for the closest start codon.

What happens if there is no TATA box?

From this original mutation study, a change in transcription can be seen when there is no TATA box to promote transcription, but transcription of a gene will occur when there is an insertion to the sequence. The nature of the resulting phenotype may be affected due to the insertion.

What is the difference between enhancers and silencers?

Enhancers function as a "turn on" switch in gene expression and will activate the promoter region of a particular gene while silencers act as the "turn off" switch. Though these two regulatory elements work against each other, both sequence types affect the promoter region in very similar ways.

What is a core promoter?

A core promoter is that portion of the proximal promoter that contains the transcription start sites. ... Biochemical definition: the minimal stretch of DNA sequence that is sufficient to direct accurate initiation of transcription. An acceptable range of the length of a core promoter is typically 60 to 120 base pairs.

What is the consensus sequence of the pribnow box?

It has a consensus sequence of TATAAT and is also known as the Pribnow box.