Enzyme-linked click chemistry assay for GOAT

cat-ELCCA, enzyme-linked click chemistry assay, was developed by Janda Group for high througput assay of GOAT, Ghrelin O-Acetyl transferase. The methodology is depicted in the drawing. The following chemistries are elegantly combined for the assay: biotin-straptavidin binding, CuAAC click chemistry, HRP catalysis, O-acetyltransferase catalysis, and fluorogenic reaction.

The method should accelerate identification of inhibitors for GOAT, which activates ghrelin by esterification with a C-8 fatty acid unit. It intimately relates to the effort of seeking agents that lower ghrelin levels as obesity or diabetes treatments.

Much like the cat-ELISA assays in immunology, cat-ELCCA, should find applications in other acyltransferases.

Angew. Chem. Int. Ed. 2010, 9630.