Microbiology

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    Ion Transport Activity Assay for Microbial Rhodopsin Expressed in Escherichia coli Cells
    Authors:  Masae Konno, Keiichi Inoue and Hideki Kandori, date: 08/05/2021, view: 43, Q&A: 0

    Microbial rhodopsins have diverse functions, including roles as light-driven ion pumps, light-gated ion channels, photosensors, and light-regulated enzymes. As the number of rhodopsin-like genes identified has increased in recent years, so has the

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    Purification and Cryo-electron Microscopy Analysis of Plant Mitochondrial Ribosomes
    Authors:  Florent Waltz, Philippe Giegé and Yaser Hashem, date: 08/05/2021, view: 19, Q&A: 0

    Plants make up by far the largest part of biomass on Earth. They are the primary source of food and the basis of most drugs used for medicinal purposes. Similarly to all eukaryotes, plant cells also use mitochondria for energy production. Among

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    In vitro Nitrate Reductase Activity Assay of Mycolicibacterium smegmatis Crude Extract
    Authors:  Wei Tan, Zhi-Hui Shao and Guo-Ping Zhao, date: 07/20/2021, view: 389, Q&A: 0

    Nitrate is one of the major inorganic nitrogen sources for microorganisms. Many bacterial and archaeal lineages can express cytoplasmic assimilatory nitrate reductase (NAS), which catalyzes the rate-limiting reduction of nitrate to nitrite in the

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    Optimised Method for the Production and Titration of Lentiviral Vectors Pseudotyped with the SARS-CoV-2 Spike

    The use of recombinant lentivirus pseudotyped with the coronavirus Spike protein of SARS-CoV-2 would circumvent the requirement of biosafety-level 3 (BSL-3) containment facilities for the handling of SARS-CoV-2 viruses. Herein, we describe a fast

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    PCR-mediated One-day Synthesis of Guide RNA for the CRISPR/Cas9 System
    Authors:  Naim Hassan, Farhana Easmin, Keisuke Ekino and Satoshi Harashima, date: 07/05/2021, view: 1192, Q&A: 0

    Nowadays, CRISPR (clustered regularly interspaced short palindromic repeats) and the CRISPR-associated protein (Cas9) system play a major role in genome editing. To target the desired sequence of the genome successfully, guide RNA (gRNA) is

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    Yeast Lipid Extraction and Analysis by HPTLC
    Authors:  Dan Li, Zheng-Tan Zhang, Cheng-Wen He and Zhiping Xie, date: 07/05/2021, view: 897, Q&A: 0

    The diversity of lipid structures, properties, and combinations in biological tissues makes their extraction and analysis an experimental challenge. Accordingly, even for one of the simplest single-cellular fungi, the budding yeast (Saccharomyces

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    Production, quantification, and infection of Amazonian Phlebovirus (Bunyaviridae)

    Phlebotomine vectors, sand flies of the order Diptera, are known to transmit Leishmania parasites as well as RNA viruses (arboviruses) to humans. The arbovirus, Icoaraci Phlebovirus (BeAN 24262 - ICOV), used in this study was isolated from Nectomys

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    Visualization of Host Cell Kinase Activation by Viral Proteins Using GFP Fluorescence Complementation and Immunofluorescence Microscopy
    Authors:  Sherry T. Shu, Wing Fai Li and Thomas E. Smithgall, date: 07/05/2021, view: 1450, Q&A: 0

    Non-receptor protein-tyrosine kinases regulate cellular responses to many external signals and are important drug discovery targets for cancer and infectious diseases. While many assays exist for the assessment of kinase activity in vitro, methods

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    Transcriptional Run-on: Measuring Nascent Transcription at Specific Genomic Sites in Yeast
    Authors:  Victoria Begley, Lola de Miguel-Jiménez and Sebastián Chávez, date: 06/20/2021, view: 771, Q&A: 0

    DNA transcription by RNA polymerases has always interested the scientific community as it is one of the most important processes involved in genome expression. This has led scientists to come up with different protocols allowing analysis of this

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    Fluorescence-based Heme Quantitation in Toxoplasma Gondii
    Authors:  Amy Bergmann and Zhicheng Dou, date: 06/20/2021, view: 908, Q&A: 0

    Toxoplasma gondii is a highly prevalent protozoan pathogen throughout the world. As a eukaryotic intracellular pathogen, Toxoplasma ingests nutrients from host cells to support its intracellular growth. The parasites also encode full or partial

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