在真核生物中LARP1蛋白的保存功能
Farnaz Mansouri-Noori1, Mark A Bayfield1
1Department of Biology, York University, Toronto, Canada.
Wiley interdisciplinary reviews. RNA
|November 25, 2025
概括
与LA相关的蛋白质 (LARP) 是关键的RNA结合蛋白质. 本综述探讨了LARP1在mRNA翻译和稳定中的功能,检查了跨生物体的保留作用和5'TOP动机的演变.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学是一种遗传学.
- 生物化学 生物化学
背景情况:
- 与LA相关的蛋白质 (LARP) 是保存的RNA结合蛋白质,对RNA代谢至关重要.
- 特别地,LARP1结合了5'终端寡聚胺 (5'TOP) mRNAs,这些mRNAs编码翻译因子.
- 人类LARP1的DM15域涉及识别5'TOP动机,影响mRNA翻译和稳定性.
研究的目的:
- 审查和比较RNA结合模式和LARP1的功能,在各种模型生物体的奥托洛格.
- 调查LARP1功能的进化背景,特别是关于5'TOP动机和DM15域.
- 确定LARP1生物学中的共同主题和未来研究方向.
主要方法:
- 对人类和模型生物中的LARP1正义学研究的文献综述.
- 报告的RNA结合机制和功能角色的比较分析.
- 综合发现,以确定保存的主题和进化模式.
主要成果:
- LARP1在调节特定mRNA子集的翻译和稳定性方面发挥着保留作用.
- 5'TOP动机和DM15域并不普遍保留,这表明LARP1.1的祖先功能.
- 在RNA结合中存在并行,并且在各种LARP1正义基因中运行,尽管有序列变化.
结论:
- LARP1家族成员具有重要的功能,可能早于5'TOP动机的演变.
- 了解LARP1的不同角色需要考虑其进化轨迹和保存的RNA结合活动.
- 需要进一步的研究,以充分阐明LARP1-RNA相互作用在不同物种的功能影响.
相关概念视频
Conservation of Protein Domains Over Different Proteins
14.0K
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
14.0K
lncRNA - Long Non-coding RNAs
9.7K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
9.7K
Directing Proteins to the Rough Endoplasmic Reticulum
16.6K
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
16.6K
Regulation of the Unfolded Protein Response
2.9K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.9K
Eukaryotic RNA Polymerases
26.6K
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
All three eukaryotic RNAPs require specific transcription factors, of which the...
26.6K
Eukaryotic RNA Polymerases
9.0K
9.0K


