• 제목/요약/키워드: methylelaiophylin

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Methylelaiophylin의 항균활성 (Antibacterial Activities of Methylelaiophylin)

  • 이동선;이상한;우주형;이진만;서영배;홍순덕
    • 생명과학회지
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    • 제7권3호
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    • pp.180-185
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    • 1997
  • Methylelaiophylin은 gram양성균에 대하여 광범위한 항균활성을 보이며, 특히Bacillus subtilis에서 superoxide redicals을 발생하여 항균활성을 나타낸다. B. subtilis에 대한 항균활성은 wild type strain보다 mutant strain인 rec$^{-}$에 대하여 더민감하며, 이러한 항균력은 항산화제인 dithiothreito에 의하여 현저히 감소되었다. 또한 항균력은 세포내 RNA합성보다 DN합성에 효과적으로 작용하였다. 이러한 결과들은 methylelaiophylin의 항균활성이 세포내에서 발생한 활성산소에 의하여 기인한 것임을 나타낸다.

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Antiviral Activity of Methylelaiophylin, an ${\alpha}$-Glucosidase Inhibitor

  • Lee, Do-Seung;Woo, Jin-Kyu;Kim, Dong-Hern;Kim, Min-Young;Cho, So-Mi K.;Kim, Jae-Hoon;Park, Se-Pill;Lee, Hyo-Yeon;Riu, Key Zung;Lee, Dong-Sun
    • Journal of Microbiology and Biotechnology
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    • 제21권3호
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    • pp.263-266
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    • 2011
  • Methylelaiophylin isolated from Streptomyces melanosporofaciens was selected as an ${\alpha}$-glucosidase inhibitor with an $IC_{50}$ value of 10 ${\mu}M$. It showed mixed-type inhibition of ${\alpha}$-glucosidase with a $K_i$ value of 5.94 ${\mu}M$. In addition, methylelaiophylin inhibited the intracellular trafficking of hemagglutinin-neuramidase (HN), a glycoprotein of Newcastle disease virus (NDV), in baby hamster kidney (BHK) cells. Methylelaiophylin inhibited the cell surface expression of NDV-HN glycoprotein without significantly affecting HN glycoprotein synthesis in NDV-infected BHK cells.