Nuclear protein synthesis: a re-evaluation

Related Experiment Video

Updated: Sep 27, 2026

Quantitative Immunofluorescence to Measure Global Localized Translation
09:13

Quantitative Immunofluorescence to Measure Global Localized Translation

Published on: August 22, 2017

Lubov Nathanson, Tianli Xia, Murray P Deutscher

    RNA (New York, N.Y.)
    |January 30, 2003
    PubMed

    More Related Videos

    Polysome Fractionation and Analysis of Mammalian Translatomes on a Genome-wide Scale10:56

    Polysome Fractionation and Analysis of Mammalian Translatomes on a Genome-wide Scale

    Published on: May 17, 2014

    Assessment of Selective mRNA Translation in Mammalian Cells by Polysome Profiling10:00

    Assessment of Selective mRNA Translation in Mammalian Cells by Polysome Profiling

    Published on: October 28, 2014

    Related Concept Videos

    Nuclear Export of mRNA02:31

    Nuclear Export of mRNA

    Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
    Nuclear Export of mRNA02:31

    Nuclear Export of mRNA

    Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
    Nuclear Protein Sorting01:34

    Nuclear Protein Sorting

    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.
    Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
    The Nucleolus02:55

    The Nucleolus

    The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
    Nuclear Export01:42

    Nuclear Export

    The nucleus restricts several proteins within and allows others to pass. The restricted proteins possess a nuclear retention sequence or NRS, anchoring them to the nuclear lamins and preventing their transport to the cytosol. The non-restricted proteins, after their synthesis, are transported to their site of action, such as the cytosol or other organelles, with the help of nuclear export signals or NES.
    NES are of three types- the canonical 10-residue long leucine-rich signal and other...
    Regulation of Nuclear Protein Sorting01:45

    Regulation of Nuclear Protein Sorting

    Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...