Ponceau S solution
Company: Sigma-Aldrich
Catalog#: P7170
Product evaluation:
Mutant Huntingtin Secretion in Neuro2A Cells and Rat Primary Cortical Neurons
Author:
Date:
2018-01-05
[Abstract]  Quantitative analysis of proteins secreted from the cells poses a challenge due to their low abundance and the interfering presence of a large amount of bovine serum albumin (BSA) in the cell culture media. We established assays for detection of mutant huntingtin (mHtt) secreted from Neuro2A cell line stably expressing mHtt and rat primary cortical neurons by Western blotting. Our protocol is based on reducing the amounts of BSA in the media while maintaining cell viability and secretory ...

Zonal Sedimentation Analysis on Sucrose Gradients
Author:
Date:
2014-04-20
[Abstract]  Zonal sedimentation analysis on sucrose gradients allows estimation of the molecular size of an individual protein or a protein complex by centrifugation at a constant speed under nondenaturing conditions. This method is particularly suitable for globular proteins like the influenza A virus (IAV) protein hemagglutinin (HA). Here, I describe step by step a protocol used to evaluate the oligomeric state of recombinant HA trimers (Magadan et al., 2013).

Antibody Purification from Western Blotting
Author:
Date:
2012-03-20
[Abstract]  This protocol describes a method of purifying antibodies from sera with denatured antigens immobilized on western blot membranes. Advantages include (1) fast and easy; (2) purification of antibody with antigen in denatured form allows high yield in case antigen protein solubility is limited. Disadvantage is that possible antibodies that recognize certain 3D structure in solution of antigens might not be purified using such a method. Regarding this issue, the flow through is recommended to be ...

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