Microbiology

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    Protocols in Current Issue
    Strand-specific Single-stranded DNA Sequencing (4S-seq) of E. coli genomes
    Authors:  Takahiro Masuda, Nobuaki Kono, Masaru Tomita and Kazuharu Arakawa, date: 08/05/2019, view: 331, Q&A: 0
    [Abstract] Most bacterial genomes have biased nucleotide composition, and the asymmetry is considered to be caused by a single-stranded DNA (ssDNA) deamination arising from the bacterial replication machinery. In order to evaluate the relationship experimentally, the position and frequency of ssDNA formed during replication must be verified clearly. Although ...
    ChIP-seq Experiment and Data Analysis in the Cyanobacterium Synechocystis sp. PCC 6803
    Authors:  Joaquín Giner-Lamia, Miguel A. Hernández-Prieto and Matthias E. Futschik, date: 06/20/2018, view: 3670, Q&A: 0
    [Abstract] Nitrogen is an essential nutrient for all living organisms. In cyanobacteria, a group of oxygenic photosynthetic bacteria, nitrogen homeostasis is maintained by an intricate regulatory network around the transcription factor NtcA. Although mechanisms controlling NtcA activity appear to be well understood, the sets of genes under its control (i.e. ...
    Single Genome Sequencing of Expressed and Proviral HIV-1 Envelope Glycoprotein 120 (gp120) and nef Genes
    [Abstract] The current study provides detailed protocols utilized to amplify the complete HIV-1 gp120 and nef genes from single copies of expressed or integrated HIV present in fresh-frozen autopsy tissues of patients who died while on combined antiretroviral therapy (cART) with no detectable plasma viral load (pVL) at death (Lamers et al ...
    Next-generation Sequencing of the DNA Virome from Fecal Samples
    Authors:  Cynthia L. Monaco and Douglas S. Kwon, date: 03/05/2017, view: 5391, Q&A: 0
    [Abstract] Herein we describe a detailed protocol for DNA virome analysis of low input human stool samples (Monaco et al., 2016). This protocol is divided into four main steps: 1) stool samples are pulverized to evenly distribute microbial matter; 2) stool is enriched for virus-like particles and DNA is extracted by phenol-chloroform; 3) purified ...
    Human, Bacterial and Fungal Amplicon Collection and Processing for Sequencing
    Author:  Julia Oh, date: 05/20/2015, view: 7701, Q&A: 3
    [Abstract] Sequencing taxonomic marker genes is a powerful tool to interrogate the composition of microbial communities. For example, bacterial and fungal community composition can be evaluated in parallel using the 16S ribosomal RNA gene for bacteria or the internal transcribed spacer region in fungi. These are conserved regions that are universal to a ...



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