coomassie Protocols

Category: Chromatography Protocols: Affinity Chromatography Protocols

Recombinant protein or a chemically synthesized bioactive fragment is immobilized on resin and used as a probe to capture interacting proteins directly from a cell extract.  Affinity-purified proteins are fractionated by gel electrophoresis and visualized by Coomassie staining.  Proteins that interact specifically are identified by comparing this gel profile to one obtained from cell lysates passed over a control resin lacking the immobilized probe protein. - [Read Affinity Purification of Interacting Proteins from Cell Lysates Protocol]

Category: Protein Protocols: Protein Electrophoresis

An excellent guide on the analysis of proteins on SDS-PAGE gels, through staining with coomassie blue dye and western blot analysis. Analysis of Protein Gels (SDS-PAGE). David R. Caprette, Rice University. - [Read Analysis of Protein Gels (SDS-PAGE)]

Category: Protein Protocols: Protein Quantitation Concentration Protocols: Bradford Protein Assay Protocols

The bradford dye-binding assay is a colorimetric assay for measuring total protein concentration.  It involves the binding of Coomassie Brilliant blue to protein. There is no interference from cations nor from carbohydrates such as sucrose. 
Detergents such as sodium dodecyl sulfate and triton x-100 can interfere with the assay, as well as strongly alkaline solutions.

Includes a general overview of the procedure and preparation of the standards in the protocol. - [Read Bradford Assay Method]

Category: Protein Protocols: Protein Quantitation Concentration Protocols: Bradford Protein Assay Protocols

Includes Abbreviations, Background, and Procedure steps using BSA. The Bradford protein assay (1) is one of several simple methods commonly used to determine the total protein concentration of a sample.  The method is based on the proportional binding of the dye Coomassie to proteins. The assay is colorimetric; as the protein concentration increases, the color of the test sample becomes darker.  Coomassie absorbs at 595 nm.  - [Read Bradford Protein Concentration Assay]

Category: Protein Staining Protocols

Protocol for coomassie blue staining. - [Read Coomassie Blue Staining Protocol]

Category: Proteomic Protocols

In Gel Digestion Protocols for Silver Stained and Coomassie Stained Gels. (EMBL protocol). - [Read In Gel Digestion Protocols for Silver Stained and Coomassie Stained Gels]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Cytotoxicity Assays in Cell Culture Protocols

The cytotoxic effect of chemicals upon mammalian cells, such as BALB/c 3T3 and HepG2, in culture is measured by highest tolerated dose (HTD), cell viability (Neutral Red) and total cell protein (coomassie blue). - [Read Neutral Red Cytotoxicity Assay Protocol]

Category: Primary Cell Isolation and Culture Protocols

Protocols for protein staining. Includes: Coomassie Blue Staining; Silver Nitrate Staining; Zinc Imidazole Negative Staining. - [Read Protein Staining Protocols]

Category: Mass Spectrometry Protocols

Colloidal coomassie blue staining, Destaining, Reduction/Alkylation, Peptide extraction For MALDI-MS analysis and For MALDI-MS analysis protocols and methods. Institut Curie Paris. - [Read Proteomic protocols and Peptide Extraction]

Category: Proteomic Protocols

Proteomic Protocols for Sample Submission to Mass Spec. Gel Staining, In gel trypsin digestion, Coomassie Blue staining and TCA precipitation. CFG U. Albany. - [Read Proteomic Protocols for Sample Submission to Mass Spec]

Category: Cell Biology and Cell Culture

Microtubule binding assay protocol using the materials: Siliconized ultracentrifuge microfuge tubes, GTP-depleted microtubules, 6X SDS loading dye, 1X SDS loading dye, Coomassie Brilliant Blue R 250 (0.8% in 50% methanol + 10% acetic acid)and Destaining solution (13% methanol + 3% acetic acid). - [Read Protocol for Microtubule Binding Assays]