Protein analysis (IMAGE)
Caption
To find out which molecular tools the sulfate-reducing bacteria use, the researchers analysed the entire set of proteins present, known as the proteome. In total, they looked at the results of 80 different test conditions. Each time, they seperated the protein mixture in several steps, until each individual compound could be identified. Here, a separating gel containing blue bands with proteins of similar size and charge is placed on a light table. A robot arm cuts pinhead-sized pieces from the gel, which can contain from just a few to more than hundred different proteins. These pre-sorted proteins are then further analysed using a chromatograph and mass spectrometer.
Credit
University of Oldenburg / Mohssen Assanimoghaddam
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