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Guild Associates
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Proteome Analysis: 2-D Electrophoresis

Two-Dimensional Electrophoresis

Proteome Analysis
SDS PAGE
2-DE
RAMR™
Differential
Hi-Res
For customers choosing this service, the experts at GBS will apply two-dimensional electrophoresis (2DE) to the protein material provided, whether processed or raw. Acceptable raw materials include tissues, tissue cultures, cell lines, bacteria, yeast and other microorganisms. When customer samples are provided in a denaturing buffer, the total protein value for each sample must be given to ensure proper loading quantities. If a customer conducts the initial sample disruption, GBS can mail an optimized denaturing buffer for final sample dilution at a minimal charge. Alternatively, GBS can perform specialized disruptions, general processing of raw material, and/or calculations of total protein for additional fees.
Note: If GBS does the sample disruption, total protein will be calculated, and there will be a charge for this computation.
For the 2DE service, the first dimension (isoelectric focusing or IEF) is conducted with immobilized pH gradient (IPG) strips using an Amersham Biosciences Multiphor II system. Customers may choose from the following options:
choose an IPG strip pH range from broad to very narrow
choose an IPG strip length: 7 cm, 11 cm, 18 cm, 24 cm
The system used for the second dimension (SDS PAGE) depends on the gel size required. For the minigel format, a Biorad Protean III system is used; for standard format, a Hoeffer 600 system is used; and for large format, an Ettan Daltsix (Amersham Biosciences) system is used. Customers may choose from the following options:
choose from 8-10% total actylamide for gels of homogenous acrylamide concentrations, or request custom gradient gels for an additional charge
choose non-denaturing or non-reducing SDS PAGE in either dimension or both, if needed
choose from 3 different size formats: mini, standard, or large
choose from several protein staining methods: Coomassie Blue, Silver, Sypro Ruby, or other specialized stains
Results are returned as a JPEG image with a description of the running conditions. Before contacting GBS, please visit the sample preparation page for tips on maximizing the results of analysis.
For this service,
the customer provides:
Upon completion of this service,
the customer receives:
Cell lysate* (tissue lysing and separation can be conducted at GBS for an extra charge)
Buffer composition
Total protein content
Operational options:
  • IEF/SDS PAGE conditions (non-reducing, non-denaturing, percent acrylamide, IPG strips)
  • Gel size: mini (5x7 cm), Std (16x16 cm), large (26x20 cm)
  • Staining: Coomassie, silver, SyproRuby, specialized
Basic Report
  • Gel images - 16x16 cm (1 gel – 11 cm strips, Std format)
  • Running conditions
Optional Reports
  • Isoelectric point (pI) and molecular weights
  • Dried gel returned
  • Protein identification with mass spectrometry
Pricing List
Base Price
$170 for each sample
For option pricing contact GBS by email, contact form, or by downloading our custom quote form.

*The customer is required to inform GBS if source material contains biological toxins, highly toxic reagents, or potentially infectious material, and if there are any special handling requirements. Analysis of radioactive material is not supported.
 
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GBS is a Division of Guild Associates Inc