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Detection of recombinant proteins from cell lysates by Differential Scanning Fluorimetry(DSF) (CAT#: STEM-MB-0792-WXH)

Introduction

Recombinant proteins are proteins encoded by recombinant DNA that has been cloned in an expression vector that supports expression of the gene and translation of messenger RNA. Modification of the gene by recombinant DNA technology can lead to expression of a mutant protein.




Principle

Differential Scanning Fluorimetry measures protein thermal unfolding by monitoring changes in fluorescence emission of a sample upon heating. This allows the determination of protein thermostability and complex formation even with weakly binding ligands by thermal shift assay. Differential Scanning Fluorimetry is therefore ideally suited for screening of optimum buffer conditions like pH, buffer composition and ionic strength. The technique is applicable to any biological sample, from soluble proteins to integral membrane proteins.

Applications

To identify low-molecular-weight ligands that bind and stabilize purified proteins.
To measure the denaturation and unfolding of proteins.

Procedure

1. Preparation of compound solutions
2. Preparation of buffer/additive screen plates
3. Preparation of compound storage plates
4. Equipment preparation
5. Sample preparation
46. Performing the scan

Materials

Real-time PCR instrument
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