- P-ISSN 1225-0163
- E-ISSN 2288-8985
얇은 유리판 위에서 자동적으로 정렬되는 인지질 분자의 정렬도에 대한 수분 및 항균성 펩타이드의 효과를 고체 핵자기 공명 분광법을 이용하여 조사하였다. 순수한 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphotidylcholine (POPC) 인지질 만을 유리판 위에서 정렬시킬 때에는 직접적인 물의 투입 없이 95%상대 습도에서 수일간 수화시키는 것만으로 충분했다. 하지만, protegrin-1 (PG-1)과 같은 항균성 펩타이드가 혼합되어 있는 인지질의 경우에는 95%의 상대 습도에서 수일간 수화시키는 것과 약간의 물을 시료에 직접 투입하여 수화시키는 것이 크게 달라진다는 것을 확인하였다. 충분한 양의 물이 투입되었을때, 지질 이중막 위에서 인지질 분자들의 표면 움직임이 매우 활발하였다. 순수한 POPC 분자들이 얇은유리판 위에서 정렬되는 시간에 비해 항균성 펩타이드가 혼합되어 있는 경우에는 POPC 분자들이 평형상을 이루어질 때까지는 상당한 시간이 필요함을 확인하였다
The hydration and antimicrobial peptide effects on the lipid alignment on the surface of a thin glass plate were investigated by using the solid-state nuclear magnetic resonance spectroscopy. Pure 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphotidylcholine (POPC) lipid molecules were well aligned on the surface of a thin glass plate without direct hydration by placing the sample for a few days in the desiccator containing a saturated sodium phosphate dibasic solution, which provided 95% relative humidity. But there was a big difference between two lipid phases, the one of which was hydrated by placing the sample for a few days in the desiccator with 95% relative humidity without direct hydration and the other was directly hydrated by dropping water and then placed for a few days in the same desiccator. The surface mobility of POPC molecules in a lipid bilayer phase was much activated by water. While the time for the POPC to align on the glass plate surface was short, the time for the PG-1/POPC mixture to reach the its equilibrium state was long.
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