FuncPEP v2.0:由非编码RNA翻译的功能短的更新数据库
Swati Mohapatra1,2, Anik Banerjee2,3, Paola Rausseo1,4
1Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
Non-coding RNA
|April 26, 2024
概括
越来越多地发现了从非编码RNA (ncRNA) 翻译的功能性,称为ncPEPs. 更新的FuncPEP v2.0数据库现在包括152个ncPEP,突出了它们的双价生物作用.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 蛋白质组学是指蛋白质组学.
背景情况:
- 非编码RNAs (ncRNAs) 越来越多地被认为其作用超出了结构或调节功能.
- 短功能 (ncPEP) 可以从ncRNA中翻译,为这些转录呈现双价函数.
- 了解ncPEP对于推动生物和疾病研究至关重要.
研究的目的:
- 更新FuncPEP数据库以从ncRNAs (ncPEPs) 翻译的新发现的功能性.
- 将宿主ncRNA分类并分析新发现的ncPEPs的特征.
- 为研究ncPEP及其功能的研究人员提供全面的资源.
主要方法:
- 从2020年8月到2023年7月,使用特定的关键词进行了系统的PubMed搜索.
- 我们选了报告来自ncRNAs的验证功能的出版物.
- 来自已识别的ncPEPs的数据被编译和分类,包括宿主ncRNA类型,物种,识别方法和功能分布.
主要成果:
- FuncPEP v2.0数据库包含152个功能性ncPEP,在过去三年中发现了40个新项目.
- 观察到新发现的功能性ncPEPs的增加是稳定的,而不是显著的.
- 新发现的ncPEPs通过各种参数进行了表征,包括宿主ncRNA,物种,长度,识别方法和功能角色.
结论:
- 更新的FuncPEP v2.0数据库扩展了从ncRNAs中翻译的功能的知识.
- 虽然质谱学有助于ncPEP的识别,但在充分描述其功能方面仍然存在挑战.
- 需要进一步的研究来克服在证明已识别的ncPEPs的功能意义上的局限性.
更多相关视频
08:23De novo Identification of Actively Translated Open Reading Frames with Ribosome Profiling Data
Published on: February 18, 2022
3.6K
07:38Mass Spectrometry-Based Proteomics Analyses Using the OpenProt Database to Unveil Novel Proteins Translated from Non-Canonical Open Reading Frames
Published on: April 11, 2019
12.7K
相关概念视频
Leaky Scanning
5.1K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.1K
Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K
Nonsense-mediated mRNA Decay
10.6K
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,...
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
10.6K
Improving Translational Accuracy
10.2K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
10.2K
Proteins: From Genes to Degradation
12.2K
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
Transcription is the synthesis of RNA...
12.2K
Nuclear Export of mRNA
7.7K
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...
7.7K
