Transfer Rna Profiling
Transfer Rna Profiling - Related Videos
02:36
Transfer RNA Synthesis
0 Views •
2020
One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases. Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
02:36
Transfer RNA Synthesis
0 Views •
2023
One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases. Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
09:12
Calcified Artery Preparation and Processing with Preserved Morphology and RNA for Digital Spatial Profiling
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2026
This protocol includes a step-by-step workflow for calcified vascular specimens: tissue handling, decalcification, RNA validation, calcification level detection, and region-of-interest selection strategies on the Nanostring GeoMx Digital Spatial Profiler (DSP). The goal is to present a comprehensive method for preserving vascular tissue morphology and RNA for reliable spatial transcriptomic analysis.
10:56
Metabolic Labeling and Profiling of Transfer RNAs Using Macroarrays
0 Views •
Cited by 2 •
2018
We describe an original transfer RNA analysis platform named SPOt (Streamlined Platform for Observing tRNA). SPOt simultaneously measures cellular levels of all tRNAs in biological samples, in only three steps, and in less than 24 hours.
11:00
Metabolic Labeling of Newly Transcribed RNA for High Resolution Gene Expression Profiling of RNA Synthesis, Processing and Decay in Cell Culture
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Cited by 105 •
2013
Total cellular RNA provides a poor template for studying short-term changes in RNA synthesis and decay as well as the kinetics of RNA processing. Here, we describe metabolic labeling of newly transcribed RNA with 4-thiouridine followed by thiol-specific biotinylation and purification of newly transcribed RNA allowing to overcome these limitations.
FAQs
Structured and chemically modified mature tRNAs shape every stage of the assay. Their molecular features must be considered when workflows enrich tRNAs, adapt their molecular ends, and then generate complementary DNA. These constraints are important when interpreting apparent abundance or sequence differences across samples or tissues.
The measurements can separate several dimensions that total abundance would miss: sequence variation, chemical modification, cleavage, isoacceptor levels, and tRNA-derived fragments. Considering these features together helps connect changes in the tRNA pool with codon decoding and protein synthesis, while fragment measurements can identify patterns associated with cellular stress.
They can distinguish whether a genetic change is associated with altered tRNA sequence, abundance, processing, modification, or function. This broadens analysis beyond the presence of a variant itself: profiling can connect genotype-related changes to codon decoding and protein synthesis, and can help examine effects in cells or tissues where regulation differs.
Cleavage produces a separate class of molecules that can vary across cellular conditions. Measuring fragments alongside mature tRNA features allows investigators to examine cleavage as its own readout rather than treating every sequence-derived signal as intact tRNA. This distinction is especially relevant when studying cellular stress, where profiling can expose changes linked to stress responses.
A typical workflow enriches tRNAs from cells or tissues, adapts their molecular ends, reverse-transcribes the molecules into complementary DNA, sequences the resulting material, and applies computational analysis. The analysis then quantifies isoacceptors and tRNA-derived fragments while examining abundance, sequence variation, modification, and cleavage across samples.
End adaptation prepares the molecules for downstream reverse-transcription and sequencing. It occurs after tRNA enrichment and before complementary-DNA synthesis, placing the material into a form that can proceed through the workflow. This step is important because mature tRNAs are structured and chemically modified molecular species.
Transfer Rna Profiling can support studies of cellular stress, development, disease, codon decoding, and protein synthesis. By measuring tRNA features across cells or tissues, investigators can identify whether regulation changes with biological context rather than assuming a single pattern applies everywhere. The results provide context for interpreting how tRNA regulation contributes to genetic and cellular processes.
It can be used to examine variants that alter tRNA production, processing, modification, or function. Comparing profiling measurements across relevant cells or tissues can show whether a variant is associated with changes in abundance, sequence, modification, or cleavage. These results provide a molecular route for relating genetic variation to translation, cellular stress, development, or disease.