Acyl chain orientational order in the hexagonal HII phase of phospholipid-water dispersions
نویسندگان
چکیده
منابع مشابه
Acyl Chain Orientational Order
The deuterium nuclear magnetic resonance (2H NMR) spectrum of perdeuterated tetradecanol in a mixture of 1-palmitoyl-2-oleoyl-phosphatidylethanolamine (POPE) and water was used to compare the variation of the acyl chain orientational order parameter, S(n), with carbon position, n, in the liquid crystalline lamellar (La) and hexagonal (HI,) phases. The characteristic independence of S(n) with n ...
متن کاملChain order profile in lipid HII phases.
Dear Sir: In an interesting recent paper, Sternin et al. (1988) presented data on the orientational acyl chain order in the hexagonal HI, phase. Deuterium nuclear magnetic resonance (2H NMR) measurements were made on perdeuterated tetradecanol in a mixture with l-palmitoyl-2-oleoyl phosphatidylethanolamine in water. The data were analyzed by a novel method which involved first obtaining the ori...
متن کاملA theory of the chain melting phase transition of aqueous phospholipid dispersions.
A model for the chain melting phase transition in dilute aqueous phospholipid bilayer dispersions is presented. This model includes interactions between head groups, between hydrocarbon chains, and within the chains. The head groups are modeled as hard disks which are constrained to lie on a two-dimensional surface separating the aqueous and hydrocarbon regions. The chain statistics problem is ...
متن کاملEffect of acyl chain composition on salt-induced lamellar to inverted hexagonal phase transitions in cardiolipin.
Salt-induced fluid lamellar (L alpha) to inverted hexagonal (HII) phase transitions have been studied in diphosphatidylglycerols (cardiolipins) with different acyl chain compositions, using 31P nuclear magnetic resonance (NMR) spectroscopy. Cardiolipins with four myristoyl chains, tetramyristoyl cardiolipin (TMCL), and with four oleoyl chains, tetraoleoyl cardiolipin (TOCL), were synthesized ch...
متن کاملMolecular view of hexagonal phase formation in phospholipid membranes.
Important biological processes, such as vesicle fusion or budding, require the cell matrix to undergo a transition from a lamellar to a nonlamellar state. Although equilibrium properties of membranes are amenable to detailed theoretical studies, collective rearrangements involved in phase transitions have thus far only been modeled on a qualitative level. Here, for the first time, the complete ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1988
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(88)83004-2