Biophysics

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    Protocols in Current Issue
    Efficient Transient Gene Knock-down in Tobacco Plants Using Carbon Nanocarriers
    Authors:  Gozde S. Demirer and Markita P. Landry, date: 01/05/2021, view: 328, Q&A: 0
    Gene knock-down in plants is a useful approach to study genotype-phenotype relationships, render disease resistance to crops, and enable efficient biosynthesis of molecules in plants. Small interfering RNA (siRNA)-mediated gene silencing is one of ...
    Efficient Transient Gene Knock-down in Tobacco Plants Using Carbon Nanocarriers
    Authors:  Gozde S. Demirer and Markita P. Landry, date: 01/05/2021, view: 328, Q&A: 0
    [Abstract] Gene knock-down in plants is a useful approach to study genotype-phenotype relationships, render disease resistance to crops, and enable efficient biosynthesis of molecules in plants. Small interfering RNA (siRNA)-mediated gene silencing is one of the most common ways to achieve gene knock-down in plants. Traditionally, siRNA is delivered into ...
    Mechanical Characterization of Glandular Acini Using a Micro-indentation Instrument
    Authors:  Christopher S. O’Bryan, Qiao Zhang, Tanmay P. Lele and Thomas E. Angelini, date: 12/05/2020, view: 585, Q&A: 0
    [Abstract]

    The linker of nucleoskeleton and cytoskeleton (LINC) complex is responsible for tethering the nucleus to the cytoskeleton, providing a pathway for the cell’s nucleus to sense mechanical signals from the environment. Recently, we explored the role of the LINC complex in the development of glandular epithelial acini, such as those found in

    ...
    Serial Cryomicrotomy of Saccharomyces cerevisiae for Serial Electron Cryotomography
    Authors:  Cai Tong Ng, Mark S. Ladinsky and Lu Gan, date: 11/20/2020, view: 618, Q&A: 0
    [Abstract] Electron cryotomography (cryo-ET) is an increasingly popular technique to study cellular structures and macromolecules in situ. Due to poor penetration of electrons through thick biological samples, the vitreously frozen samples for cryo-ET need to be thin. For frozen-hydrated cells, such samples can be produced either by cryomicrotomy or ...
    Assembly and Imaging Set up of PIE-Scope
    [Abstract] Cryo-Electron Tomography (cryo-ET) is a method that enables resolving the structure of macromolecular complexes directly in the cellular environment. However, sample preparation for in situ Cryo-ET is labour-intensive and can require both cryo-lamella preparation through cryo-Focused Ion Beam (FIB) milling and correlative light microscopy ...
    Optogenetic Tuning of Protein-protein Binding in Bilayers Using LOVTRAP
    Authors:  Doug Tischer and Orion D. Weiner, date: 09/05/2020, view: 1871, Q&A: 0
    [Abstract] Modern microscopy methods are powerful tools for studying live cell signaling and biochemical reactions, enabling us to observe when and where these reactions take place from the level of a cell down to single molecules. With microscopy, each cell or molecule can be observed both before and after a given perturbation, facilitating better inference ...
    Expression and Purification of Functionally Active Serotonin 5-HT2A Receptor in Insect Cells Using Low-titer Viral Stock
    [Abstract] The serotonin 5-HT2A receptor (5-HT2AR) is a member of the GPCR family that is important for various neurological functions and whose dysregulation causes many mental health disorders. Structural investigations of 5-HT2AR require the production of functionally active receptors expressed from eukaryotic cell ...
    Production and Isolation of Magnetic Protein Crystals in HEK293T Cells
    Authors:  Thomas L. Li and Bianxiao Cui, date: 07/20/2020, view: 939, Q&A: 0
    [Abstract] Advances in protein engineering have enabled the production of self-assembled protein crystals within living cells. Our recent publication demonstrates the production of ftn-PAK4, which is a ferritin-containing crystal that can mineralize iron and become magnetic when isolated. We have developed an optimized protocol for the production and ...
    Preparation and Characterization of Ginger Lipid-derived Nanoparticles for Colon-targeted siRNA Delivery
    Authors:  Junsik Sung, Chunhua Yang, James F. Collins and Didier Merlin, date: 07/20/2020, view: 721, Q&A: 0
    [Abstract] Synthetic nanoparticle-based drug delivery system is widely known for its ability to increase the efficacy and specificity of loaded drugs, but it often suffers from relatively higher immunotoxicity and higher costs as compared to traditional drug formulations. Contrarily, plant-derived nanoparticles appear to be free from these limitations of ...
    NMR waterLOGSY as An Assay in Drug Development Programmes for Detecting Protein-Ligand Interactions–NMR waterLOGSY
    Authors:  Carole J. R. Bataille, Terence H. Rabbitts and Timothy D. W. Claridge, date: 07/05/2020, view: 1380, Q&A: 0
    [Abstract] In drug development programmes, multiple assays are needed for the determination of protein-compound interactions and evaluation of potential use in assays with protein-protein interactions. In this protocol we describe the waterLOGSY NMR method for confirming protein-ligand binding events.
    Preparation of Yeast tRNA Sample for NMR Spectroscopy
    Authors:  Marjorie Catala, Alexandre Gato, Carine Tisné and Pierre Barraud, date: 06/20/2020, view: 1156, Q&A: 0
    [Abstract] Transfer RNAs (tRNAs) are heavily decorated with post-transcriptional modifications during their biosynthesis. To fulfil their functions within cells, tRNAs undergo a tightly controlled biogenesis process leading to the formation of mature tRNAs. In addition, functions of tRNAs are often modulated by their modifications. Although the biological ...



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