Applied Biological Chemistry

  • 제46권4호
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  • Pages.385-390
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  • 2003
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  • 2468-0834(pISSN)
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  • 2468-0842(eISSN)
한국응용생명화학회 (The Korean Society for Applied Biological Chemistry)
권호 표지

미국자리공(Phytolacca americana L.) 뿌리의 항균 펩타이드 정제 및 특성연구

Purification and Charaterization of Antimicrobial Peptide from Roots of Pokeweed

  • 발행 : 2003.11.30
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⟨ 이전 논문 다음 논문 ⟩

초록

미국자리공(Phytolacca americana L.) 뿌리에서 항균 펩타이드를 분리하여 PAMP-r로 명명 하였다. 분리는 DEAE-cellulose, sephadex G-75, Mono S, Resource RPC등을 거쳐 이루어 졌으며 최종산물은 15% SDS-PAGE 에서 약 4,900 Da의 분자량을 보였다. PAMP-r는 광범위한 항균활성을 나타냈으며 온도와 pH변화에도 높은 안정성을 보였다. 항균활성은 $80^{\circ}C$에서 30분동안 유지될 뿐만 아니라 pH도 3.0의 산성에서부터 pH 8.0의 알카리에 이르기까지 광범위한 범위 안에서 안정하게 나타났다.

An antimicrobial peptide was purified from the roots of Phytolacca americana L. and was designated as PAMP-r. Purification was carried out by DEAE-cellulose anion exchange, sephadex G-75 gel filtration, Mono S cation exchange, and Resource RPC reverse phage chromatography. The molecular weight of PAMP-r was estimated to be about 4,900 Da by 15% SDS-PAGE under reducing condition. PAMP-r exhibited a broad spectrum of antimicrobial activity. PAMP-r was stable against heat and pH treatment; its activity was not diminished by the heat treatment up to $80^{\circ}C$ for 30 min, and it showed a pH stability in the range between pH 3.0 to pH 8.0.

키워드

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