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A Nonradioactive Assay for Nitric Oxide Synthase Activity in Tissue Extracts

2025-03-31 生物化学 加入收藏
We describe a fluorescence assay for nitric oxide synthase activity based on a n

We describe a fluorescence assay for nitric oxide synthase activity based on a new indicator, 4,5-diaminofluorescein (DAF-2). The method offers the advantage of being safer and more convenient than the citrulline radioassay in common use. The rapid and irreversible binding of DAF-2 to oxidized nitric oxide (NO) enables NO production to be measured in real time. The protocol is applied to the measurement of nitric oxide synthase in crude extracts of skeletal muscle.

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