Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Isolation, Purification, and Characterization of the Lytic Enzyme of Anabaena cylindrica by Penicillium oxalicum (HCLF-34)

Penicillium oxalicum(HCLF-34)으로부터 남조세균 (Anabaena cylindrica) 분해효소의 분리 및 동정

  • 현성희 (을지의과대학교 의예과) ;
  • 이호용 (상지대학교 생명과학과) ;
  • 최영길 (한양대학교 자연과학대학 생명과학과)
  • Published : 2000.03.01
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Abstract

Algal lytic enzyme, an extracellular enzyme, was purified from the culture filtrate of Penicillium oxalicum(HCLF-34) by ultrafiltration, gel filtration chromatography, and anion exchange chromatography. The enzyme has a molecular mass of approximately 22 kDa, an it is a monomer by renaturation SDS-PAGE. The amino acid sequences of the enzyme was revealed to be NH2-Glu-Ser-Tyr-Ser-Ser-Asn-Ala-Ala-Gly-Ala-Val-Leu-Ile---, had about 84% identity with the mature light chain of aspergillopepsin II precursor and 81% identity with the mature protein of the acid proteinase EapC precursor.

Penicillium oxalicum(HCLF-34)의 세포외 분비효소로부터 ultrafilration, gel filtration chromatograph와 anion exchange chromatography법을 이용하여 남조세균(Anabaena cylindrica) 분해효소를 분리하였다. 이 효소의 분자량은 약 22 kDa이며, renaturation SDS-PAGE에서 monomer로서 남조세균 분해 활성을 갖는다. 아미노산 서열은 N-말단부터$NH_(2)$-Glu-Ser-Tyr-Ser-Ser-Asn-Ala-Ala-Gly-Ala-Val-Leu-Ile---, 13개의 아미노산을 분석하였으며, 분석된 아미노산의 homology를 조사한 결과 aspergillopepsin II precursor(acid protease A)와 13개의 아미노산 중 11개(84%)의 유사도를 나타내었고, acid proteinase EapC precursor과 13개 중 10개(81%)의 유사도를 나타내었다.

Keywords

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