| Literature DB >> 15221754 |
Julie Fiévet1, Christine Dillmann, Gilles Lagniel, Marlène Davanture, Luc Negroni, Jean Labarre, Dominique de Vienne.
Abstract
We statistically analysed various factors to get accurate estimates of protein quantities from two-dimensional gels. Yeast proteins were labelled with (35)S or stained with Coomassie Brilliant Blue G-250, and spots were automatically quantified with software packages Kepler, ImageQuaNT, Melanie 3.0 and Progenesis. The different software packages proved to have very similar performances. With (35)S-labelled actin spot as a reference, we studied the staining efficiency of colloidal Coomassie blue as a function of amino acid composition of the protein, and derived an equation to estimate the number of molecules per cell from blue-stained proteins. Absolute quantification of most glycolytic enzymes was carried out in two yeast strains.Entities:
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Year: 2004 PMID: 15221754 DOI: 10.1002/pmic.200300731
Source DB: PubMed Journal: Proteomics ISSN: 1615-9853 Impact factor: 3.984