umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Structure and Dynamics of Interfacial Water in an L Phase Lipid Bilayer from Molecular Dynamics Simulations
Umeå universitet, Teknisk-naturvetenskaplig fakultet, Kemi.
Umeå universitet, Teknisk-naturvetenskaplig fakultet, Kemi.
Visa övriga samt affilieringar
2003 (Engelska)Ingår i: Biophysical Journal, Vol. 84, s. 102-15Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Based on molecular dynamics simulations, an analysis of structure and dynamics is performed on interfacial water at a liquid crystalline dipalmitoylphosphatidycholine/water system. Water properties relevant for understanding NMR relaxation are emphasized. The first and second rank orientational order parameters of the water O–H bonds were calculated, where the second rank order parameter is in agreement with experimental determined quadrupolar splittings. Also, two different interfacial water regions (bound water regions) are revealed with respect to different signs of the second rank order parameter. The water reorientation correlation function reveals a mixture of fast and slow decaying parts. The fast (ps) part of the correlation function is due to local anisotropic water reorientation whereas the much slower part is due to more complicated processes including lateral diffusion along the interface and chemical exchange between free and bound water molecules. The 100-ns-long molecular dynamics simulation at constant pressure (1 atm) and at a temperature of 50°C of 64 lipid molecules and 64 x 23 water molecules lack a slow water reorientation correlation component in the ns time scale. The 2H2O powder spectrum of the dipalmitoylphosphatidycholine/water system is narrow and consequently, the NMR relaxation time T2 is too short compared to experimental results.

Ort, förlag, år, upplaga, sidor
2003. Vol. 84, s. 102-15
Identifikatorer
URN: urn:nbn:se:umu:diva-9965OAI: oai:DiVA.org:umu-9965DiVA, id: diva2:149636
Tillgänglig från: 2008-06-03 Skapad: 2008-06-03 Senast uppdaterad: 2018-06-09Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

http://www.biophysj.org/cgi/content/full/84/1/102?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&searchid=1&FIRSTINDEX=0&volume=84&firstpage=102&fdate=1/1/2003&tdate=12/31/2003&resourcetype=HWCIT

Personposter BETA

Åman, KenWestlund, Per-Olof

Sök vidare i DiVA

Av författaren/redaktören
Åman, KenWestlund, Per-Olof
Av organisationen
Kemi

Sök vidare utanför DiVA

GoogleGoogle Scholar

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 165 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf