The Upstream pseudoknot (UPSK) domain is an
RNA element found in the
turnip yellow mosaic virus
''Turnip yellow mosaic virus'' (TYMV) is an isometric ''Tymovirus'' of the family ''Tymoviridae''. Its host range is confined almost entirely to plants in the genus ''Brassica'' in western Europe, which includes cabbages, cauliflower and broccol ...
,
beet virus Q
The beetroot is the taproot portion of a beet plant, usually known in North America as beets while the vegetable is referred to as beetroot in British English, and also known as the table beet, garden beet, red beet, dinner beet or golden bee ...
,
barley stripe mosaic virus
''Barley stripe mosaic virus'' (BSMV), of genus ''Hordevirus'', is an RNA viral plant pathogen whose main hosts are barley and wheat. The common symptoms for BSMV are yellow streaks or spots, mosaic, leaves and stunted growth. It is spread prim ...
and
tobacco mosaic virus,
which is thought to be needed for efficient
transcription
Transcription refers to the process of converting sounds (voice, music etc.) into letters or musical notes, or producing a copy of something in another medium, including:
Genetics
* Transcription (biology), the copying of DNA into RNA, the fir ...
. Disruption of the
pseudoknot
__NOTOC__
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 ...
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.
References
External links
*
Cis-regulatory RNA elements
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