Literature DB >> 3676446

Scanning calorimetry reveals a new phase transition in L-alpha-dipalmitoylphosphatidylcholine.

J L Slater1, C Huang.   

Abstract

We report a new phase transition in fully hydrated dispersions of dipalmitoylphosphatidylcholine (DPPC). This new transition, called the sub-subtransition, exhibits a transition enthalpy of 0.25 kcal/mol with a Tm at 6.8 degrees C. Unlike the subtransition, no extended low temperature incubation is required to observe the sub-subtransition. This new sub-subgel (SGII) phase may be a precursor to the subgel (SGI) phase, and this discovery is discussed in relation to the current knowledge regarding the polymorphic gel phases of both ester- and ether-linked lipids with identical acyl chains.

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Year:  1987        PMID： 3676446      PMCID： PMC1330061          DOI： 10.1016/S0006-3495(87)83260-5

Source DB:  PubMed          Journal:  Biophys J        ISSN： 0006-3495            Impact factor:   4.033


  19 in total

1.  Hydrostatic pressure induces hydrocarbon chain interdigitation in single-component phospholipid bilayers.

Authors:  L F Braganza; D L Worcester
Journal:  Biochemistry       Date:  1986-05-06       Impact factor: 3.162

2.  Structure and polymorphism of the hydrocarbon chains of lipids: a study of lecithin-water phases.

Authors:  A Tardieu; V Luzzati; F C Reman
Journal:  J Mol Biol       Date:  1973-04-25       Impact factor: 5.469

Review 3.  Raman spectroscopy of thermotropic and high-pressure phases of aqueous phospholipid dispersions.

Authors:  P T Wong
Journal:  Annu Rev Biophys Bioeng       Date:  1984

4.  A low-temperature structural phase transition of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine bilayers in the gel phase.

Authors:  P T Wong; H H Mantsch
Journal:  Biochim Biophys Acta       Date:  1983-07-13

5.  Scanning calorimetric evidence for a third phase transition in phosphatidylcholine bilayers.

Authors:  S C Chen; J M Sturtevant; B J Gaffney
Journal:  Proc Natl Acad Sci U S A       Date:  1980-09       Impact factor: 11.205

6.  Lipid polymorphism.

Authors:  C P Tilcock
Journal:  Chem Phys Lipids       Date:  1986 Jun-Jul       Impact factor: 3.329

7.  Phosphatidylcholine bilayers: subtransitions in pure and in mixed lipids.

Authors:  L Finegold; M A Singer
Journal:  Chem Phys Lipids       Date:  1984-08       Impact factor: 3.329

8.  Scanning calorimetric study of fully hydrated asymmetric phosphatidylcholines with one acyl chain twice as long as the other.

Authors:  H Xu; C H Huang
Journal:  Biochemistry       Date:  1987-02-24       Impact factor: 3.162

9.  Pressure locking of the subgel phase of hydrated dipalmitoyl phosphatidylcholine bilayers: a Raman spectroscopic study.

Authors:  E Mushayakarara; P T Wong; H H Mantsch
Journal:  Biophys J       Date:  1986-06       Impact factor: 4.033

10.  Thiocyanate and bromide ions influence the bilayer structural parameters of phosphatidylcholine bilayers.

Authors:  B A Cunningham; L J Lis
Journal:  Biochim Biophys Acta       Date:  1986-10-09
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  3 in total

1.  Pressure perturbation and differential scanning calorimetric studies of bipolar tetraether liposomes derived from the thermoacidophilic archaeon Sulfolobus acidocaldarius.

Authors:  Parkson Lee-Gau Chong; Revanur Ravindra; Monika Khurana; Verrica English; Roland Winter
Journal:  Biophys J       Date:  2005-06-24       Impact factor: 4.033

2.  New ordered metastable phases between the gel and subgel phases in hydrated phospholipids.

Authors:  B Tenchov; R Koynova; G Rapp
Journal:  Biophys J       Date:  2001-04       Impact factor: 4.033

3.  Rapid reversible formation of a metastable subgel phase in saturated diacylphosphatidylcholines.

Authors:  R Koynova; B G Tenchov; S Todinova; P J Quinn
Journal:  Biophys J       Date:  1995-06       Impact factor: 4.033
  3 in total

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