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last updated: April 2, 2020
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We all know that genes encode proteins that make up a living cell. However, the level and coordination of gene expression is really the key to the success of a living cell. One way eukaryotic cells (that’s us!) control protein expression is through addition of a methyl or hydroxymethyl group on the cytosine nucleotide. This…
Target capture through PCR has been a mainstay in genomics for years, but scientists working on especially repetitive, poorly characterized, or rapidly evolving regions continue to struggle to fish out those stretches of DNA for further study. However, whole genome sequencing, the only other alternative for these regions, can force researchers to pay for much…
The Human Genome Project was successful, but hard work. The major improvements to the technology were the increases in parallelization and automation. In 2003, just as the HGP completion papers were published in Nature and Science, ABI launched the‘3730XL’. It could run 24 96-well plates per day and generate around 2 MB of sequence. Some…
The field of epigenetics is exploding and given the strong links between epigenetic state and disease, the need to study markers like DNA methylation in humans is very relevant. This article outlines some of the main factors you should be taking into account in your study of DNA methylation in human tissues. Here goes: Biological…
DNA sequencing (PCR, Sanger or next-generation sequencing (NGS)) is a now familiar part of any molecular biology lab. But ‘RNA-seq’, the so-called “Cinderella of genetics”, is now becoming the belle of the ball, providing new insights into this most central molecule of the ‘central dogma’. The many flavors of RNA Whilst genomic DNA is the…
Construction of high-quality sequencing libraries is pivotal to successful NGS, and DNA quality is one of the most critical aspects of library preparation. As this Nature Methods paper illustrates, DNA shearing involves appropriate and consistent fragment sizes for sensitive and accurate sequencing, and the fragments must be accurately analyzed prior to sequencing to measure molarity…
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