Difference Between Upstream and Downstream DNA

Upstream is toward the 5' end of the RNA molecule and downstream is toward the 3' end. ... When considering double-stranded DNA, upstream is toward the 5' end of the coding strand for the gene in question and downstream is toward the 3' end.

1. Is upstream positive or negative?
2. Is transcription upstream or downstream?
3. Is the promoter upstream or downstream?
4. What does downstream mean in biology?
5. Which direction is upstream DNA?
6. What direction is upstream?
7. What direction is downstream?
8. What is downstream and upstream?
9. Why can nucleotides only be added to the 3 end?
10. Is TATA box a promoter?
11. What is upstream of a promoter?
12. How far upstream is a promoter?

Is upstream positive or negative?

Distances downstream from (negative numbers) and upstream from (positive numbers) the mouth of Steel Creek at which largemouth bass were relocated in the Savannah River. Vertical bars represent the number of relocations at progressively greater distances.

Is transcription upstream or downstream?

Downstream (or 3' to) is in the direction of transcription (or translation) whereas upstream (5' to) is in the direction from which the polymerase (or ribosome) has come.

Is the promoter upstream or downstream?

A promoter is a region of DNA that generally is located upstream of a gene and facilitates and regulates its transcription.

What does downstream mean in biology?

Downstream. 1. (Science: molecular biology) portions of dna or rna that are more remote from the initiation sites and that will therefore be translated or transcribed later. 2. Shorthand term for things that happen at a late stage in a sequence of reactions.

Which direction is upstream DNA?

Upstream is toward the 5' end of the RNA molecule and downstream is toward the 3' end. When considering double-stranded DNA, upstream is toward the 5' end of the coding strand for the gene in question and downstream is toward the 3' end.

What direction is upstream?

English Language Learners Definition of upstream

: in the direction opposite to the flow in a stream, river, etc. : toward the source of a stream, river, etc.

What direction is downstream?

Downstream means towards where the flow ends, at the opposite end of the waterway from the source.

What is downstream and upstream?

The terms upstream and downstream oil and gas production refer to an oil or gas company's location in the supply chain. ... Upstream oil and gas production is conducted by companies who identify, extract, or produce raw materials. Downstream oil and gas production companies are closer to the end user or consumer.

Why can nucleotides only be added to the 3 end?

DNA Polymerase can only add nucleotides at the -OH group which is on the 3' end. This free -OH group is necessary because it can carry out a nucleophilic attack on phosphate group of the incoming deoxyribonucleoside triphosphate which would contain the base that is complementary to the template strand.

Is TATA box a promoter?

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.

What is upstream of a promoter?

A promoter is a regulatory region of DNA located upstream (towards the 5' region) of of a gene, providing a control point for regulated gene transcription. The promoter contains specific DNA sequences that are recognized by proteins known as transcription factors.

How far upstream is a promoter?

Promoters are about 100-1000 base pairs long and are adjacent and typically upstream (5') of the sense or coding strand of the transcribed gene. The coding strand is the DNA strand that encodes codons and whose sequence corresponds to the mRNA transcript produced.