Microbiology

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    Protocols in Current Issue
    A Rapid Induction Overexpression System for the Fission Yeast Schizosaccharomyces pombe
    Author:  Angad Garg, date: 10/20/2021, view: 765, Q&A: 0
    [Abstract]

    The fission yeast Schizosaccharomyces pombe is an excellent genetically tractable model organism used in the study of conserved eukaryotic cellular biology. One genetic tool in the assessment of gene function is the in vivo overexpression of proteins. Existing overexpression tools have limitations of induction kinetics, dynamic range, and/or

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    Quantification of RuBisCO Expression and Photosynthetic Oxygen Evolution in Cyanobacteria
    Authors:  Mateusz Kędzior and Betul Kacar, date: 10/20/2021, view: 973, Q&A: 0
    [Abstract]

    Phototrophic microorganisms are frequently engineered to regulate the expression and the activity of targeted enzymes of interest for specific biotechnological and agricultural applications. This protocol describes a method to evaluate the expression of RuBisCO (ribulose 1,5-bisphosphate carboxylase/oxygenase) in the model cyanobacterium

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    Development and Quantitation of Pseudomonas aeruginosa Biofilms after in vitro Cultivation in Flow-reactors
    Authors:  Yingdan Zhang, Jingru Zhao, Hang Cheng, Jing Wang, Liang Yang and Haihua Liang, date: 08/20/2021, view: 1107, Q&A: 0
    [Abstract]

    Characterization of biofilm formation and metabolic activities is critical to investigating biofilm interactions with environmental factors and illustrating biofilm regulatory mechanisms. An appropriate in vitro model that mimics biofilm in vivo habitats therefore demands accurate quantitation and investigation of biofilm-associated activities.

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    Candida albicans Culture, Cell Harvesting, and Total RNA Extraction
    Authors:  Max V. Cravener and Aaron P. Mitchell, date: 11/05/2020, view: 2091, Q&A: 0
    [Abstract]

    Transcriptional analysis has become a cornerstone of biological research, and with the advent of cheaper and more efficient sequencing technology over the last decade, there exists a need for high-yield and efficient RNA extraction techniques. Fungi such as the human pathogen Candida albicans present a unique obstacle to RNA purification in the

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    TetR Regulated in vivo Repression Technology to Identify Conditional Gene Silencing in Genetically Engineerable Bacteria Using Vibrio cholerae Murine Infections as Model System
    Authors:  Franz G. Zingl, Fabian Mitterer, Himadri B. Thapa and Stefan Schild, date: 10/05/2020, view: 1637, Q&A: 0
    [Abstract] Investigation of bacterial gene regulation upon environmental changes is still a challenging task. For example, Vibrio cholerae, a pathogen of the human gastrointestinal tract, faces diverse transient conditions in different compartments upon oral ingestion. Genetic reporter systems have been demonstrated to be extremely powerful tools to ...
    Whole-genome Identification of Transcriptional Start Sites by Differential RNA-seq in Bacteria
    Authors:  Ramón Cervantes-Rivera and Andrea Puhar, date: 09/20/2020, view: 4073, Q&A: 0
    [Abstract] Gene transcription in bacteria often starts some nucleotides upstream of the start codon. Identifying the specific Transcriptional Start Site (TSS) is essential for genetic manipulation, as in many cases upstream of the start codon there are sequence elements that are involved in gene expression regulation. Taken into account the classical gene ...
    Measurement of the Promoter Activity in Escherichia coli by Using a Luciferase Reporter
    Authors:  Yuki Yamanaka, Hiroki Watanabe, Erika Yamauchi, Yukari Miyake and Kaneyoshi Yamamoto, date: 01/20/2020, view: 3097, Q&A: 0
    [Abstract] The reporter system is widely used technique for measuring promoter activity in bacterial cells. Until now, a number of reporter system have been developed, but the bioluminescent reporter constructed from the bacterial luciferase genes is one of the useful systems for measuring in vivo dynamics of gene expression. The introduced ...
    Protocol for Ribosome Profiling in Bacteria
    Authors:  Fuad Mohammad and Allen R. Buskirk, date: 12/20/2019, view: 6165, Q&A: 1
    [Abstract] Ribosome profiling provides information on the position of ribosomes on mRNA on a genomic scale. Although this information is often used to detect changes in gene expression under different conditions, it also has great potential for yielding insight into the mechanism and regulation of protein synthesis itself. First developed in yeast, ribosome ...
    Yeast Single-cell RNA-seq, Cell by Cell and Step by Step
    [Abstract] Single-cell RNA-seq (scRNA-seq) has become an established method for uncovering the intrinsic complexity within populations. Even within seemingly homogenous populations of isogenic yeast cells, there is a high degree of heterogeneity that originates from a compact and pervasively transcribed genome. Research with microorganisms such as yeast ...
    Imaging Gene Expression Dynamics in Pseudomonas fluorescens In5 during Interactions with the Fungus Fusarium graminearum PH-1
    Authors:  Rosanna C. Hennessy, Peter Stougaard and Stefan Olsson, date: 06/20/2019, view: 3384, Q&A: 0
    [Abstract] Genomics, transcriptomics and metabolomics are powerful technologies for studying microbial interactions. The main drawback of these methods is the requirement for destructive sampling. We have established an alternative but complementary technique based on a microplate system combined with promoter fusions for visualizing gene expression in space ...



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