Global Translation
Global Translation - Related Videos
09:13
Quantitative Immunofluorescence to Measure Global Localized Translation
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Cited by 4 •
2017
This manuscript describes a method to visualize and quantify localized translation events in subcellular compartments. The approach proposed in this manuscript requires a basic confocal imaging system and reagents and is rapid and cost-effective.
06:58
Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling
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Cited by 1 •
2021
Co-translational interactions play a crucial role in nascent-chain modifications, targeting, folding, and assembly pathways. Here, we describe Selective Ribosome Profiling, a method for in vivo, direct analysis of these interactions in the model eukaryote Saccharomyces cerevisiae.
01:50
Global Climate Change
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2019
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past. Past Periods of Warming and Cooling In the last...
02:33
Initiation of Translation
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2020
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs. First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
01:44
Termination of Translation
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2020
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
FAQs
The three stages contribute differently to total protein production. Initiation places ribosomes on messenger RNAs, elongation adds amino acids as codons are read, and termination releases completed proteins. A change in any stage can alter the cell-wide translation signal, so an overall decrease or increase indicates altered synthesis activity without identifying which individual transcript or stage caused it.
Global translation combines protein synthesis across many messenger RNA transcripts, whereas measuring one protein focuses on a specific product. This broader view can reveal a general shift in cellular protein production that may not be apparent from a single target. It is therefore useful for assessing whether a treatment or genetic change affects protein synthesis broadly rather than selectively.
Nutrient availability and cellular stress can change the overall rate at which genetic information is converted into proteins. When these conditions alter protein production, the resulting global translation measurement reflects a system-wide biochemical response. Comparing cells under different nutritional or stress conditions can therefore help connect environmental changes with regulation of cellular growth and function.
Ribosomes provide the machinery that reads messenger RNA codons, while transfer RNAs help select the corresponding amino acids for incorporation into a growing protein. Their coordinated activity determines how efficiently codon information becomes an amino acid sequence. Because global translation sums this activity across many transcripts, changes in either component can influence the overall protein synthesis signal.
Researchers can compare the overall protein synthesis activity of cells or biological systems exposed to different conditions, such as altered nutrients, stress, drugs, or genetic changes. The comparison indicates whether protein production has broadly increased or decreased relative to another condition. This makes the measurement useful for detecting system-level biochemical effects, even when individual protein responses differ.
A change in global translation can provide evidence that cellular growth-related protein production has been altered. Because growth depends on the coordinated synthesis of many proteins, a broad shift in translation may indicate a corresponding change in the cell’s biochemical activity. The measurement does not by itself identify the responsible proteins, but it helps characterize the overall growth response.
Drug treatments can be evaluated by examining whether they change total protein synthesis across a cell or biological system. A broad reduction or increase in the translation signal suggests that the drug affects cellular protein production at a system level. Researchers can use this information alongside other observations to assess how treatment may influence biochemical function.
Genetic changes may alter protein production across many messenger RNA transcripts rather than affecting only one protein. Measuring global translation captures the combined consequence of those changes and can reveal a broad shift in biochemical activity. This provides context for interpreting how a genetic alteration influences cellular function, growth, or responses to environmental conditions.