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집파리유충 hemolymph 중신형의 anti-fungal peptides의 분리정제

Isolation and Purification of Novel Anti-Fungal Peptides from Hemolymph of Immunized Larvae of Housefly, Musca domestica

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  • 성창근 (충남대학교, 농업생명과학대학, 식품공학과)
  • Gu Li-Juan (Gui Yang Medical College) ;
  • Wu Jian-Wei (Gui Yang Medical College) ;
  • Su Xiao-Qing (Gui Yang Medical College) ;
  • Sung Chang-Keun (Department of Food Science and Technology, College of Agriculture and Biotechnology, Chungnam National University)
  • 발행 : 2006.06.01

초록

유도된 집파리유통 hemolymph중에서 Candida albicans의 3가지 anti-fungal peptides를 분리하였다. 3개 anti-fungal peptides는 분자량이 4-16 kDa 사이의 분명한 구별이 있을 뿐만 아니라, 각 peptide는 anti-fungal peptides작용이 있었다. 이들 peptide의 공통 특징은 모두 열을 받은 뒤 활성이 변하지 않는 비교적 강한 내열성을 보여주었다.

To isolate and purify anti-fungal active substances from immunized housefly (Musca domestica), low dose of Candida albicans was injected into the larvae of the housefly to induce the appearance of potent anti-fungal active substances in the hemolymph. This purification work was performed by the routine isolation and purification processes of protein, namely, solid phase extraction (SPE), SDS-PACE electrophoresis, HPLC purification. Three 4-16 kDa peptides which exhibited antifungal activity against Candida albican and other fungi were isolated from induced hemolymph. Consequently, further anti-fungal activity study showed that these three peptides were different either in molecular weight or in anti-fungal activity. All isolated substances were proved to be active and resistant to high-temperature. It was deduced that these peptides isolated from induced housefly were novel members of the insect defensin family and they were inducible.

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