Related Experiment Video
Updated: Oct 6, 2025
08:09
An Aquatic Microbial Metaproteomics Workflow: From Cells to Tryptic Peptides Suitable for Tandem Mass Spectrometry-based Analysis
Published on: September 15, 2015
8.9K
tRNA modification dynamics from individual organisms to metaepitranscriptomics of microbiomes
Wen Zhang1, Marcus Foo2, A Murat Eren3
1Department of Biochemistry & Molecular Biology, University of Chicago, Chicago, IL 60637, USA.
Molecular Cell
|January 15, 2022
Summary
Transfer RNA (tRNA) modifications are dynamic and respond to environmental cues. These changes regulate gene expression and tRNA fragment production, impacting cellular processes.
Area of Science:
- Molecular Biology
- RNA Biology
- Genetics
Background:
- Transfer RNA (tRNA) is the most extensively modified RNA molecule in cells, with bacterial tRNAs averaging 8 modifications and eukaryotic tRNAs averaging 13.
- Recent research highlights the dynamic nature of tRNA modifications, demonstrating their responsiveness to environmental conditions.
- These dynamic modifications play crucial roles in gene expression and the biogenesis of tRNA fragments.
Purpose of the Study:
- To review recent advancements in understanding tRNA modification dynamics.
- To explore the roles of tRNA modification erasers.
- To discuss tRNA modification studies in human-associated bacteria and natural communities like microbiomes.
Main Methods:
- Review of current literature on tRNA modification dynamics.
- Analysis of tRNA sequencing methodologies.
- Exploration of the concept of 'metaepitranscriptomics' for studying tRNA modifications in complex biological communities.
Main Results:
- TRNA modifications are not static but are highly dynamic and adaptable to environmental changes.
- These modifications are essential for on-demand decoding of specific codons and the regulated production of tRNA fragments.
- Studies in human-associated bacteria and microbiomes are expanding our understanding of tRNA modification functions.
Conclusions:
- TRNA modification dynamics are critical for cellular adaptation and gene regulation.
- The field of metaepitranscriptomics offers a promising approach to study tRNA modifications in natural biological systems.
- Further research into tRNA modification erasers and their roles is warranted.
More Related Videos
Related Concept Videos
01:29Modern Molecular Taxonomy
234
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
234
01:10Transcription
150.1K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
150.1K
01:20Applications of Molecular Taxonomy
173
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
173
01:53Bacterial Transcription
30.3K
RNA polymerase (RNAP) carries out DNA-dependent RNA synthesis in both bacteria and eukaryotes. Bacteria do not have a membrane-bound nucleus. So, transcription and translation occur simultaneously, on the same DNA template.
Transcription can be divided into three main stages, each involving distinct DNA sequences to guide the polymerase. These are:
Transcription can be divided into three main stages, each involving distinct DNA sequences to guide the polymerase. These are:
30.3K
01:16Transduction
252
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
252
02:05Gene Evolution - Fast or Slow?
7.5K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.5K