Biochemistry

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    Protocols in Current Issue
    RNA Stability Measurements Using RT-qPCR in Arabidopsis Seedlings
    Authors:  Tianran Jia and Brandon H. Le, date: 07/20/2020, view: 251, Q&A: 0
    [Abstract] Steady-state mRNA levels are determined by both the rates of transcription and degradation. Regulation of mRNA stability and/or degradation are key factors that can significantly affect mRNA levels and its biological functions. mRNA stability can be measured indirectly after transcription inhibition. This protocol described a rapid and sensitive ...
    Preparation of Yeast tRNA Sample for NMR Spectroscopy
    Authors:  Marjorie Catala, Alexandre Gato, Carine Tisné and Pierre Barraud, date: 06/20/2020, view: 637, 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 ...
    Confocal and Super-resolution Imaging of RNA in Live Bacteria Using a Fluorogenic Silicon Rhodamine-binding Aptamer
    Authors:  Regina Wirth, Peng Gao, G. Ulrich Nienhaus, Murat Sunbul and Andres Jäschke, date: 05/05/2020, view: 1387, Q&A: 0
    [Abstract] Genetically encoded light-up RNA aptamers have been shown to be promising tools for the visualization of RNAs in living cells, helping us to advance our understanding of the broad and complex life of RNA. Although a handful of light-up aptamers spanning the visible wavelength region have been developed, none of them have yet been reported to be ...
    Real-time Fluorescence Measurement of Enterovirus Uncoating
    Authors:  Visa Ruokolainen, Mira Laajala and Varpu Marjomäki, date: 04/05/2020, view: 766, Q&A: 0
    [Abstract] Viruses need to open, i.e., uncoat, in order to release their genomes for efficient replication and translation. Especially for non-enveloped viruses, such as enteroviruses, the cues leading to uncoating are less well known. The status of the virus has previously been observed mainly by transmission electron microscopy using negative ...
    Enzymatic Synthesis and Fractionation of Fluorescent PolyU RNAs
    [Abstract] The physical properties of viral-length polyuridine (PolyU) RNAs, which cannot base-pair and form secondary structures, are compared with those of normal-composition RNAs, composed of comparable numbers of each of A, U, G and C nucleobases. In this protocol, we describe how to synthesize fluorescent polyU RNAs using the enzyme polynucleotide ...
    Conjugation of Duplexed siRNN Oligonucleotides with DD-HyNic Peptides for Cellular Delivery of RNAi Triggers
    Authors:  Alexander S. Hamil, Khirud Gogoi and Steven F. Dowdy, date: 04/05/2016, view: 6031, Q&A: 0
    [Abstract] Despite the great promise that short interfering RNA (siRNA) induced RNAi responses hold as a therapeutic modality, due to their size (~15 kDa) and high negative charge (Bumcrot et al., 2006), siRNAs have no bioavailability and require a delivery agent to enter cells (Figure 1). TAT peptide transduction domain (PTD) has been developed as ...
    Post-crystallization Improvement of RNA Crystals by Synergistic Ion Exchange and Dehydration
    Authors:  Jinwei Zhang and Adrian R. Ferré-D’Amaré, date: 09/05/2015, view: 5848, Q&A: 0
    [Abstract] Compared to the recent dramatic growth in the numbers of genome-wide and functional studies of complex non-coding RNAs, mechanistic and structural analyses have lagged behind. A major technical bottleneck in the structural determination of large RNAs and their complexes is preparation of diffracting crystals. Empirically, a vast majority of such ...



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