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Tag Archives: Escherichia coli

Gene expression: shape matters

31 Tuesday Jan 2012

Posted by sedeer in Bacteria, Form, Genetics

≈ 8 Comments

Tags

biology, DNA, Escherichia coli, Gene expression, genetic regulation, Mutation, Popular science, science, shape

Electron micrograph of Escherichia coli (Image via Wikipedia)A recent paper describes how the mutation of a single gene is sufficient to turn a harmless bacterium found in our gut into an invasive pathogen. Taken alone, this isn’t terribly surprising; many genes regulate the expression of other genes and some (“master” genes) act as switches that control a whole host of other genes.  The gene mutated in this study isn’t one of these “master” genes, though; it’s a structural gene and there’s a much more  intriguing reason for its broad impact on the bacterium.

Read the more intriguing story…

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