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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제20권 제6호
- 발행연도
- 1997.1
- 수록면
- 519 - 524 (6page)
이용수
초록· 키워드
오류제보하기
Steroid $9{\alpha}$-hydroxylase is an enzyme found in nocardioform microorganisms which can utilize steroids as a sole carbon source. After fractional centrifugation of the cell homogenates, the enzyme activity in Nocardia and Rhodococcus was found in cytoplasmic membrane fraction. On the contrary, Mycobacterium had its 9.alpha.-hydroxylation activity in cytosolic fraction. To characterize the enzyme in these microorganisms, several potential inhibitors of 9.alpha.-hydroxylase were tested and the cofactor requirement for the same enzyme was also examined. The inhibitory effect of ferrous ion chelators indicated involvement of iron containing proteins in the 9.alpha.-hydroxylase system. On the other hand, metyrapone, an inhibitor known to be specific for cytochrome P450 interfered with the enzyme in Mycobacterium, but didn't inhibit the enzyme activity in Nocardia and Rhodococcus. While the $9{\alpha}$-hydroxylase system in Nocardia and Rhodococcus required NADPH, NADH was required as an election donor in Mycobacterium.
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