Related Experiment Video
Updated: Aug 1, 2026

10:56
Assays for the Degradation of Misfolded Proteins in Cells
Published on: August 28, 2016
11.9K
Lost in translation: Illuminating protein mislocalization through high-content screening microscopy
Lucy G Dornan1, Jeremy C Simpson1
1Cell Screening Laboratory, School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland.
Cell Genomics
|November 14, 2024
Summary
Understanding protein localization is crucial for human health. Mislocalized proteins, often due to missense mutations, indicate dysfunction and can guide diagnostics and therapeutics.
Area of Science:
- Cell biology
- Genomics
- Proteomics
Background:
- Determining the subcellular location of all human proteins is a fundamental goal in life sciences.
- Missense mutations in proteins are increasingly linked to patient health outcomes.
- Protein mislocalization is a significant indicator of protein dysfunction.
Purpose of the Study:
- To investigate the role of subcellular protein distribution in human health.
- To explore the diagnostic and therapeutic potential of understanding protein mislocalization.
Main Methods:
- Utilizing high-content subcellular phenotypic screening.
- Employing advanced allied technologies for protein analysis.
Main Results:
- Protein mislocalization is a prominent hallmark of dysfunctional proteins.
- High-content screening effectively identifies subcellular phenotypic changes.
Conclusions:
- Understanding subcellular protein distribution is vital for diagnosing and treating diseases.
- High-content screening technologies offer transformative potential for clinical decision-making.
Related Concept Videos
Mismatch Repair
Overview
Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Improving Translational Accuracy
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...
Proteins: From Genes to Degradation
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 molecules by RNA...
Transcription is the synthesis of RNA molecules by RNA...
Leaky Scanning
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 stands for...
Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life

