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@ARTICLE{Tang:256547,
      author       = {Tang, Jennifer and Alsop, Richard and Schmalzl, Karin and
                      Epand, Richard and Rheinstädter, Maikel},
      title        = {{S}trong {S}tatic {M}agnetic {F}ields {I}ncrease the {G}el
                      {S}ignal in {P}artially {H}ydrated {DPPC}/{DMPC}
                      {M}embranes},
      journal      = {Membranes},
      volume       = {5},
      number       = {4},
      issn         = {2077-0375},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2015-06431},
      pages        = {532 - 552},
      year         = {2015},
      abstract     = {NIt was recently reported that static magnetic fields
                      increase lipid order in the hydrophobic membrane core of
                      dehydrated native plant plasma membranes [Poinapen, Soft
                      Matter 9:6804-6813, 2013]. As plasma membranes are
                      multicomponent, highly complex structures, in order to
                      elucidate the origin of this effect, we prepared model
                      membranes consisting of a lipid species with low and high
                      melting temperature. By controlling the temperature,
                      bilayers coexisting of small gel and fluid domains were
                      prepared as a basic model for the plasma membrane core. We
                      studied molecular order in mixed lipid membranes made of
                      dimyristoyl-sn-glycero-3-phosphocholine (DMPC) and
                      dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) using neutron
                      diffraction in the presence of strong static magnetic fields
                      up to 3.5 T. The contribution of the hydrophobic membrane
                      core was highlighted through deuterium labeling the lipid
                      acyl chains. There was no observable effect on lipid
                      organization in fluid or gel domains at high hydration of
                      the membranes. However, lipid order was found to be enhanced
                      at a reduced relative humidity of $43\%:$ a magnetic field
                      of 3.5 T led to an increase of the gel signal in the
                      diffraction patterns of $5\%.$ While all biological
                      materials have weak diamagnetic properties, the
                      corresponding energy is too small to compete against thermal
                      disorder or viscous effects in the case of lipid molecules.
                      We tentatively propose that the interaction between the
                      fatty acid chains’ electric moment and the external
                      magnetic field is driving the lipid tails in the hydrophobic
                      membrane core into a better ordered state.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL},
      ddc          = {570},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128},
      pnm          = {144 - Controlling Collective States (POF3-144) / 524 -
                      Controlling Collective States (POF3-524) / 6212 - Quantum
                      Condensed Matter: Magnetism, Superconductivity (POF3-621) /
                      6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
                      G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
                      G:(DE-HGF)POF3-6G4},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000367793700003},
      pubmed       = {pmid:26426063},
      doi          = {10.3390/membranes5040532},
      url          = {https://juser.fz-juelich.de/record/256547},
}