Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Purification and Charaterization of Antimicrobial Peptide from Roots of Pokeweed

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

  • Published : 2003.11.30
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Abstract

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.

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.

Keywords

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