In-gel determination of L-amino acid oxidase activity based on the visualization of Prussian blue-forming reaction.

Zhiliang Yu, Ning Zhou, Chuntian Zhao, Juanping Qiu

PloS one 2013

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L-amino acid oxidase (LAAO) is attracting increasing attention due to its important functions. Diverse detection methods with their own properties have been developed for characterization of LAAO. In the present study, a simple, rapid, sensitive, cost-effective and reproducible method for quantitative in-gel determination of LAAO activity based on the visualization of Prussian blue-forming reaction is described. Coupled with SDS-PAGE, this Prussian blue agar assay can be directly used to determine the numbers and approximate molecular weights of LAAO in one step, allowing straightforward application for purification and sequence identification of LAAO from diverse samples.

Citation

Zhiliang Yu, Ning Zhou, Chuntian Zhao, Juanping Qiu. In-gel determination of L-amino acid oxidase activity based on the visualization of Prussian blue-forming reaction. PloS one. 2013;8(2):e55548