Staining Proteins in Gels

Published 7/08/2008
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Biology
 

Summary

Following separation by electrophoretic methods, proteins in a gel can be detected by several staining methods. Staining of proteins with Coomassie Blue, Silver Staining, SYPRO Orange, SYPRO Ruby are demonstrated in this video.

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Gallagher, S., Chakavarti, D. Staining Proteins in Gels. J. Vis. Exp. (17), e760, doi:10.3791/760 (2008).

Abstract

Following separation by electrophoretic methods, proteins in a gel can be detected by several staining methods. This unit describes protocols for detecting proteins by four popular methods. Coomassie blue staining is an easy and rapid method. Silver staining, while more time consuming, is considerably more sensitive and can thus be used to detect smaller amounts of protein. Fluorescent staining is a popular alternative to traditional staining procedures, mainly because it is more sensitive than Coomassie staining, and is often as sensitive as silver staining. Staining of proteins with SYPRO Orange and SYPRO Ruby are also demonstrated here.

Protocol

The complete text protocol for this experimental approach is available in Current Protocols in Molecular Biology.

Disclosures

The authors have nothing to disclose.

Comments

8 Comments

  1. WHICH REACTION EQUATION OF CONVERT Cu+² TO Cu+1 in the protein test

    Reply
    Posted by: Anonymous
    August 3, 2008 - 7:45 AM
  2. thank you!very good!

    Reply
    Posted by: Anonymous
    September 6, 2008 - 8:51 PM
  3. It is very good, thanks

    Reply
    Posted by: Anonymous
    November 12, 2008 - 6:43 AM
  4. A good and cheap alternative to SYPRO Rubi is RuBPS staining. Here are some protocols. More information can be found on www.ruthenium.ag.vu   RuBPS staining protocol I (quality) 1. Fix the gel in 30% EtOH, 10% acetic acid overnight ². Rinse the gel in ²0% EtOH for 30 min and repeat 3 times 3. Incubate the gel in 1 mM RuBPS solution for 6 h 4. Equilibrate the gel in water for 10 min and repeat once 5. Destain the gel with 40% EtOH/10% acetic acid for 15 h 6. Equilibrate the gel in water for 10 min repeat once and scan   all% are in V/V   Procedure as published in Proteomics ²004, 4, 599–608.     RuBPS staining protocol II (fast)   1. Incubate the gel in 50 ml of 40% Ethanol/10% acetic acid containing    1 mM RuBPS for 1 h. ². Destain the gel for ²0 min in 40% Ethanol/10% acetic acid 3. Wash the gel for 10 min in water and scan   all% are in V/V   Procedure as published in PLoSONE. ²007 Feb ²8;²(²)e²63.       RuBPS staining protocol III (co-electrophoretical)   1. Add 1 ml of ²0 mM stock solution to one pocket of your SDS gel. Run     the gel according to your standard procedure. ². Incubate the gel in 50 ml of 40% Ethanol/10% acetic acid for ²0 min 3. Incubate the gel in 50 ml water for 10 min and scan       RuBPS staining protocol IV (loading buffer)   1. Add 1 ml of ²0 mM stock solution to your loading buffer (omit all other     dyes like bromophenol blue). Run the gel according to your standard     procedure. ². Incubate the gel in 50 ml of 40% Ethanol/10% acetic acid for ²0 min 3. Incubate the gel in 50 ml water for 10 min and scan  

    Reply
    Posted by: Anonymous
    February 16, 2009 - 1:20 PM
  5. Itz realy ² gud!

    Reply
    Posted by: sathya r.
    May 18, 2009 - 11:01 AM
  6. Thank yoy

    Reply
    Posted by: JASSIM A.
    May 20, 2009 - 9:39 AM
  7. thank you

    Reply
    Posted by: ibrahim b.
    August 27, 2010 - 12:31 AM
  8. thanks! This is very useful for my job!

    Reply
    Posted by: Anonymous
    August 31, 2010 - 4:33 AM

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