two-dimensional gel electrophoresis

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two-dimensional gel electrophoresis

[¦tü·də‚men·shən·əl ¦jel i‚lek·trō·fə′rē·səs]
(cell and molecular biology)
A type of gel electrophoresis in which proteins are first separated by charge and then by molecular weight, enabling the analysis of complex protein mixtures.
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With regard to 2D-PAGE conditions, before 2D-PAGE, the strip gel was equilibrated in sample buffer (strip equilibration buffer; 6 M urea, 20% glycerol, 2% dithiothreitol (DTT), 2% sodium dodecyl sulfate (SDS), and 375 mM Tris-HCI, pH 8.
162 proteins distribute among pI 4-10 intervals but 21 proteins with pI >10 were identified that beyond the 2D-PAGE separation capability.
CFTR-enriched endosomes were visualized by immuno-EM, affinity purified by AminoLink[R] gel, and analyzed by 2D-PAGE.
Except the outcome isn't quite so rewarding when all us journos are trying to do is comb through a 2D-page submission from Costcutter.
The following chapter provides an excellent discussion of quantitative proteomic techniques, covering 2D-PAGE techniques, multiplexing, metabolic and postextraction labeling, and isolation and quantitation of phosphopeptides.
Our functional genomic investigations will include quantitative measurements of mRNA using expressed sequence tags (ESTs) and microarrays, protein expression using 2D-PAGE and mass spectrometry, and metabolite expression using various analytical platforms to gain a multi dimensional view of cellular functions and biology," notes Dr.
1] generation of a cross between japonica and indica cultivars using 2D-PAGE.
In addition to the existing products for improved 2D-PAGE sample preparation, Vivascience is now also offering spin columns for sample preparation prior to mass spectrometry.
Although various approaches have been developed for protein expression analysis (4), the combination of 2D-PAGE and mass spectrometry (MS) has been the most successful (4-7).
1] Although 2D-PAGE is unchallenged in its ability to resolve thousands of proteins, it is labor-intensive, requires large quantities of protein, and is not easily converted into a diagnostic test.
Proteins separated by 2D-PAGE were identified by mass-mapping studies (see below).