- P-ISSN 1225-0163
- E-ISSN 2288-8985
얇은 유리판 위에 인지질과 항균성 펩타이드 protegrin-1을 혼합한 용액을 도포시키고, 95% 상대습도 하에서 방치함으로써 형성된 지질-펩타이드 혼합체의 변화를 31P 고체 핵자기 공명분광법을 이용하여 조사하였다. 수화에 의한 변화와 공기 중에서 건조한 상태에서의 변화 그리고 반복적인 수화와 건조 과정에 의한 시료의 변화를 관찰하였다. 각 과정에서의 지질 이중막의 파괴 정도를 이론적 모사 과정을 통해 정량적으로 확인하였다. 지질-펩타이드 혼합체는 수화와 건조를 통해 가역적인 변화를 일으켰고, 반복과정에 의해 가장 안정한 평형 상태로 접근하고 있음을 확인하였다
Changes in antimicrobial peptide-lipid mixtures were investigated using 31P solid-state nuclear magnetic resonance spectroscopy. An antimicrobial peptide, protegrin-1, and phosphatidylcholine were deposited on a thin cover glass and incubated under a relative humidity of 95%. The changes in the mixtures were observed after hydration or air-drying. How repetitive hydration and drying changed the phase of the sample was also observed. The degrees of disruption of the well-aligned bilayers of phosphatidylcholine were determined quantitatively by simulating the experimental spectra. The peptide-lipid mixtures changed reversibly after hydration and drying, and the samples reached an equilibrium state after several repetitions.
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