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Related Concept Videos

Regulated mRNA Transport02:22

Regulated mRNA Transport

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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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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
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The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
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Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
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Leaky Scanning

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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...
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RNA Stability

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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...
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A Comprehensive Review on RNA Subcellular Localization Prediction.

Cece Zhang1, Xuehuan Zhu2, Nick Peterson3

  • 1Department of Cell & Systems Biology, University of Toronto, ON, Canada.

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Artificial intelligence (AI) and machine learning (ML) offer powerful computational methods for predicting RNA subcellular localization, overcoming limitations of traditional lab techniques. These AI approaches accelerate RNA research, aiding in understanding gene regulation and developing disease treatments.

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Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Computational Biology

Background:

  • RNA subcellular localization is crucial for biological functions, influencing gene expression and cellular processes.
  • Traditional methods for RNA localization are labor-intensive, costly, and time-consuming.
  • AI and ML present efficient alternatives for large-scale RNA localization prediction.

Purpose of the Study:

  • To review the latest AI-based computational methods for predicting RNA subcellular localization.
  • To cover sequence-based, image-based, and hybrid AI/ML methodologies.
  • To discuss challenges and opportunities in AI/ML for RNA localization.

Main Methods:

  • Review of recent advancements in AI/ML for predicting subcellular localization of various RNA types.
  • Focus on sequence-based, image-based, and hybrid computational approaches.
  • Critical analysis of current AI/ML methodologies and their applications.

Main Results:

  • AI/ML methods significantly enhance the speed and scale of RNA localization prediction.
  • These computational tools aid in understanding spatial and temporal gene expression regulation.
  • AI-driven insights can accelerate discovery in molecular pathways and disease treatment.

Conclusions:

  • AI/ML approaches are revolutionizing RNA subcellular localization studies.
  • Addressing data scarcity and benchmark limitations is key for future progress.
  • This review provides a resource for developing advanced RNA localization prediction tools.