Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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The Effects of Metal Compounds on the Biosynthesis of the Galactolipid and Composition of Fatty Acids in Escherichia coli and Bacillus subtilis

Escherichia coli와 Bacillus subtilis의 당지질 생합성과 지방산 조성에 미치는 금속산화물의 효과

  • Lee, So Yeon (Dept. of Biology, College of Natural Sciences, Sungshin Women's Univ., Seoul, Korea) ;
  • Yoon, Hyo Sook (Dept. of Biology, College of Natural Sciences, Sungshin Women's Univ., Seoul, Korea) ;
  • Choi, Won Chang (Dept. of Biology, College of Natural Sciences, Sungshin Women's Univ., Seoul, Korea) ;
  • Lee, Chong Sam (Dept. of Biology, College of Natural Sciences, Sungshin Women's Univ., Seoul, Korea)
  • Published : 1997.06.01
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Abstract

The biosynthesis of galactolipid, galactose and the fatty acid composition in E. cdi and B. subtills treated with potassium dichromate(PD, 500 ppm, 500 ppm), potassium chromate(PC, 500 ppm, 500 ppm), cobalt chloride(CC, 100 ppm, 10 ppm) and methylmercuric chloride(MC, 100 ppm, 10 ppm) during the culture were analyzed to compare with the control. The growth rate of cells, the contents of monogalactosyldiglyceride(MGDG), digalactosyldiglyceride(DGDG) and total lipid in the metal compound treatments were lower as compared with the control. And too, the contents of galactose utilized for the biosynthesis of galactolipids in these strains in the various metal compounds treatments were inhibited. The fatty acids used for the MGDG and DGDG formation in E. coli and B. subtills treated with each metal compounds during the culture were showed to the variant compositional change.

Potassium dichromate(PD, 500 ppm, 500 ppm), potassium chromate(PC, 500 ppm, 500 ppm), cobalt chloride(CC, 100 ppm, 10 ppm), methylmercuric chloride(MC, 100 ppm, 10 ppm)을 처리한 배지에 E. coli와 B.subtilis를 배양하는 동안에 당지질과 galactose의 생합성 및 지방산 조성을 대조구와 비교 분석하였다. 금속화합물 처리구에서의 생장과 MGDG, DGDG의 함량 및 total lipid는 대조구에 비해 감소하였다. 또한 당지질 형성에 이용된 galatose의 함량은 억제되었다. E. coli와 B. subtilis에서 MGDG와 DGDG 합성에 이용된 주요 지방산은 다양한 변화를 나타내었다.

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