UPSK RNA
Encyclopedia
The Upstream pseudoknot domain is an RNA element
found in the turnip yellow mosaic virus
, beet virus Q, barley stripe mosaic virus
and tobacco mosaic virus
, which is thought to be needed for efficient transcription
. Disruption of the pseudoknot
structure gives rise to a 50% drop in transcription efficiency. This element acts in conjunction with the Tymovirus/Pomovirus tRNA-like 3' UTR element
to enhance translation.
Cis-regulatory element
A cis-regulatory element or cis-element is a region of DNA or RNA that regulates the expression of genes located on that same molecule of DNA . This term is constructed from the Latin word cis, which means "on the same side as". These cis-regulatory elements are often binding sites for one or...
found in the turnip yellow mosaic virus
Turnip yellow mosaic virus
Turnip yellow mosaic virus is a tymovirus of the family Tymoviridae. These viruses infect dicotyledons while few of them attack monocotyledons also. They cause bright yellow mosaic disease showing vein clearing & molting of plant tissues.-External links:...
, beet virus Q, barley stripe mosaic virus
Barley stripe mosaic virus
Barley stripe mosaic virus is a plant pathogenic virus that primarily infects barley in Canada.- Symptoms :Mottling with yellowish spots or stripes may occur, along with stunted growth and late maturation....
and tobacco mosaic virus
Tobacco mosaic virus
Tobacco mosaic virus is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns on the leaves . TMV was the first virus to be discovered...
, which is thought to be needed for efficient transcription
Transcription (genetics)
Transcription is the process of creating a complementary RNA copy of a sequence of DNA. Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language that can be converted back and forth from DNA to RNA by the action of the correct enzymes...
. Disruption of the pseudoknot
Pseudoknot
A pseudoknot is a nucleic acid secondary structure containing at least two stem-loop structures in which half of one stem is intercalated between the two halves of another stem. The pseudoknot was first recognized in the turnip yellow mosaic virus in 1982...
structure gives rise to a 50% drop in transcription efficiency. This element acts in conjunction with the Tymovirus/Pomovirus tRNA-like 3' UTR element
Tymovirus/Pomovirus tRNA-like 3' UTR element
The tymoviruses/pomovirusesfamily tRNA-like 3' UTR element is an RNA element found in the 3' UTR of some viruses. This element acts in conjunction with UPSK RNA and a 5'-cap to enhance translation. The secondary structure of this RNA element is a cloverleaf that resembles tRNA....
to enhance translation.