Tombus virus defective interfering (DI) RNA region 3
Encyclopedia
Tombus virus defective interfering (DI) RNA region 3 is an important cis-regulatory
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...

 region identified in the 3' UTR of Tombusvirus
Tombusvirus
The genus Tombusvirus are part of the family Tombusviridae and are members of group IV of the Baltimore classification of viruses. The genomes consist of positive sense single-stranded RNA with a genome size of 4800 nucleotides. The virions are non-enveloped with a diameter of 30 nm and have...

defective interfering particles (DI).

Defective interfering RNAs are small sub-viral replicon
Replicon
*A Replicon in genetics is a region of DNA or RNA, that replicates from a single origin of replication.*Replicon is a software company providing timesheet and expense management software....

s which are non-coding deletion mutants of the virus that maintain cis-acting RNA elements necessary for replication
Replication
Replication may refer to:Science* Replication is one of the main principles of the scientific method, a.k.a. reproducibility** Replication , the repetition of a test or complete experiment...

 of the host virus. This conserved region of the 3'UTR has been found to enhance DI RNA accumulation by approximately 10-fold as well as mediating viral replication
Viral replication
Viral replication is the term used by virologists to describe the formation of biological viruses during the infection process in the target host cells. Viruses must first get into the cell before viral replication can occur. From the perspective of the virus, the purpose of viral replication is...

.

See also

  • Infectious bronchitis virus D-RNA
    Infectious bronchitis virus D-RNA
    The Infectious bronchitis virus D-RNA is an RNA element known as defective RNA or D-RNA. This element is thought to be essential for viral replication and efficient packaging of avian infectious bronchitis virus particles....

  • Red clover necrotic mosaic virus translation enhancer elements
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