Publication Date:
2004-11-06
Description:
One of the important roles of microRNA (miRNA) is to direct the cleavage of messenger RNA (mRNA). However, the mechanisms of decay of the cleaved mRNA products is not well understood. We show that miRNA-directed cleavage products in organisms as diverse as Arabidopsis, mouse, and Epstein-Barr virus have at their 3' ends a stretch (1 to 24 nucleotides) of oligouridine posttranscriptionally added downstream of the cleavage site. This 3' uridine addition, as shown for Arabidopsis, is correlated with decapping and 5' shortening of the cleaved products, suggesting a mechanistic step in the miRNA-directed mRNA decay mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shen, Binzhang -- Goodman, Howard M -- New York, N.Y. -- Science. 2004 Nov 5;306(5698):997.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, and Department of Molecular Biology, Massachusetts General Hospital, 50 Blossom Street, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528436" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Arabidopsis
;
Cells, Cultured
;
Cloning, Molecular
;
Herpesvirus 4, Human/metabolism
;
Humans
;
Mice
;
MicroRNAs/*metabolism
;
Poly U/metabolism
;
RNA, Messenger/metabolism
;
Reverse Transcriptase Polymerase Chain Reaction
;
Uridine/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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