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@ARTICLE{Pabst:21683,
      author       = {Pabst, G. and Lonez, C. and Vandenbranden, M. and Jestin,
                      J. and Radulescu, A. and Ruysschaert, J.-M. and Gutberlet,
                      T.},
      title        = {{S}talk-free membrane fusion of cationic lipids via an
                      interdigitated phase},
      journal      = {Soft matter},
      volume       = {8},
      issn         = {1744-683X},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry (RSC)},
      reportid     = {PreJuSER-21683},
      pages        = {3243 - 3249},
      year         = {2012},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We have studied the membrane structure of a cationic lipid
                      (N-t-butyl-N'-tetradecyl-3-tetradecylaminopropionamidine,
                      termed diC14-amidine) using X-ray and neutron small-angle
                      scattering as well as dilatometry and ultrasound
                      velocimetry. At high temperatures we found an anomalously
                      thin lamellar fluid phase, which transforms into a loosely
                      packed interdigitated phase below the chain melting
                      transition. Our finding can be understood based on the
                      specific structure of the lipid backbone, which forms a long
                      spacer between the alkyl chains. The loose lipid packing in
                      the gel phase leads to a significant exposure of the
                      hydrophobic lipid core to the aqueous phase. This reduces
                      energy penalties from the removal of water molecules during
                      fusion and explains the untypically increased fusion
                      properties of amidine in the gel phase. Moreover, this
                      fusion in the gel interdigitated state apparently does not
                      require the formation of stalk intermediate structures.},
      keywords     = {J (WoSType)},
      cin          = {ICS-1 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {BioSoft: Makromolekulare Systeme und biologische
                      Informationsverarbeitung (FUEK505) / 544 - In-house Research
                      with PNI (POF2-544)},
      pid          = {G:(DE-Juel1)FUEK505 / G:(DE-HGF)POF2-544},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      shelfmark    = {Chemistry, Physical / Materials Science, Multidisciplinary
                      / Physics, Multidisciplinary / Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000305481000021},
      doi          = {10.1039/c2sm25665g},
      url          = {https://juser.fz-juelich.de/record/21683},
}