RNA退,

Vicent Pelechano1, Wu Wei2, Lars M Steinmetz3

  • 1European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 69117 Heidelberg, Germany.

Cell
|June 6, 2015
PubMed
まとめ

メッセンジャーRNA (mRNA) は,翻訳中に劣化され,ほとんどの遺伝子に影響を与える保存されたプロセスです. この研究は,同翻訳的なmRNAの衰退を明らかにし,薬剤なしで全ゲノムにわたるリボソーム動態をマップします.

関連する概念動画

Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
12.2K
Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

3.7K
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
9.3K
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

5.7K
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
36.4K
RNA Stability01:53

RNA Stability

12.2K