2013
DOI: 10.15407/ubj85.01.042
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Membranothropic properties of the urocanic acid

Abstract: Методом дифференциальной сканирующей калориметрии (ДсК) исследовано влияние урокано-вой кислоты (УК) на термодинамические параметры модельных мультибислойных мембран дипаль-митоилфосфатидилхолина (ДПфХУ рокановая кислота (УК), метаболит гистидина, является естественным компонентом рогового слоя кожи. Ее функции в организме неоднозначны и до кон-ца не выяснены. Cчиталось, что основной био-логической ролью УК, помимо регуляции рН рогового слоя, является защита кожных покро-вов от УФ-излучения, под действием кото… Show more

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“…This appears to favor the ripple-phase structure over structures of the low-and high-temperature phases close to the corresponding transition temperatures, thus broadening the temperature range of its existence ( Figure 5). In a previous study, [33] we argued that urocanic acid molecules could interact with the polar part and hydrophilicÀhydrophobic interface of the bilayer. This increases the effective cross-section of the polar moiety of DPPC molecules, destabilizing the gel phase and thus facilitating the transition to the ripple phase.…”
Section: Discussionmentioning
confidence: 90%
“…This appears to favor the ripple-phase structure over structures of the low-and high-temperature phases close to the corresponding transition temperatures, thus broadening the temperature range of its existence ( Figure 5). In a previous study, [33] we argued that urocanic acid molecules could interact with the polar part and hydrophilicÀhydrophobic interface of the bilayer. This increases the effective cross-section of the polar moiety of DPPC molecules, destabilizing the gel phase and thus facilitating the transition to the ripple phase.…”
Section: Discussionmentioning
confidence: 90%