Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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Outline of Final Research Achievements |
This study aims to identify novel insect growth regulators that inhibit the enzymatic activity of Noppera-bo, a glutathione S-transferase essential for ecdysteroid biosynthesis. We utilized our own high-throughput chemical screen system and identified several candidate compounds, including β-estradiol. X-ray crystallographic and biochemical analyses revealed that the inhibitory effect of β-estradiol requires a specific hydrogen bond interaction between β-estradiol and Noppera-bo. Our results provide a novel insight into a design principle for developing practical insect growth regulators impairing ecdysteroid biosynthesis in the future.
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