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Anlysis of Glucose-6-phosphate isomerase (G6PI) by Differential Scanning Fluorimetry(DSF) (CAT#: STEM-MB-0805-WXH)

Introduction

Glucose-6-phosphate isomerase (G6PI) catalyses the second step in glycolysis in the reversible interconveision of an aldohexose glucose 6-phosphate, a six membered ring moiety to a ketohexose, fructose 6-phosphate five membered ring moiety. This enzyme is of utmost importance due to its multifunctional role like neuroleukin, autocrine motility factor, etc. in various species. G6PI from Pseudomonas aeruginosa is less explored for its moonlighting properties. These properties can be predicted by studying the active site conservation of residues and their interaction with the specific ligand.




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
59. Performing the scan

Materials

Real-time PCR instrument
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