• Title/Summary/Keyword: phenylpyropene

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Inhibition of Diacylglycerol Acyltransferase by Phenylpyropenes Produced by Penicillium griseofulvum F1959

  • Lee, Seung-Woong;Rho, Mun-Chual;Choi, Jung-Ho;Kim, Koan-Hoi;Choi, Yong-Seok;Lee, Hyun-Sun;Kim, Young-Kook
    • Journal of Microbiology and Biotechnology
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    • v.18 no.11
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    • pp.1785-1788
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    • 2008
  • Phenylpyropenes A, B, and C, isolated from Penicillium griseofulvum F1959, inhibited DGAT in rat liver microsomes with $IC_{50}$ values of $78.7{\pm}1.6$, $21.7{\pm}0.2$, and $11.04{\pm}0.2{\mu}M$, respectively. In addition, a kinetic analysis using a Lineweaver-Burk plot revealed that phenylpyropene C was a noncompetitive inhibitor of DGAT. The apparent Michaelis constant ($K_m$) value and inhibition constant ($K_i$) value were calculated to be $8{\mu}M$ and $10.48{\mu}M$, respectively. Moreover, phenylpyropene C inhibited triglyceride formation in HepG2 cells.