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Sökning: WFRF:(Ganchev D N)

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1.
  • Sparr, Emma, et al. (författare)
  • Molecular organization in striated domains induced by transmembrane alpha-helical peptides in dipalmitoyl phosphatidylcholine bilayers
  • 2005
  • Ingår i: Biochemistry. - : American Chemical Society (ACS). - 0006-2960 .- 1520-4995. ; 44:1, s. 2-10
  • Tidskriftsartikel (refereegranskat)abstract
    • Transmembrane (TM) alpha-helical peptides with neutral flanking residues such as tryptophan form highly ordered striated domains when incorporated in gel-state 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) bilayers and inspected by atomic force microscopy (AFM) (1). In this study, we analyze the molecular organization of these striated domains using AFM, photo-cross-linking, fluorescence spectroscopy, nuclear magnetic resonance (NMR), and X-ray diffraction techniques on different functionalized TM peptides. The results demonstrate that the striated domains consist of linear arrays of single TM peptides with a dominantly antiparallel organization in which the peptides interact with each other and with lipids. The peptide arrays are regularly spaced by +/-8.5 nm and are separated by somewhat perturbed gel-state lipids with hexagonally organized acyl chains, which have lost their tilt. This system provides an example of how domains of peptides and lipids can be formed in membranes as a result of a combination of specific peptide-peptide and peptide-lipid interactions.
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2.
  • de Kruijff, Ben, et al. (författare)
  • Striated domain self-organizing ordered assemblies of transmembrane α-helical peptides and lipids in bilayers
  • 2006
  • Ingår i: Biological Chemistry. - 1437-4315. ; 387:3, s. 235-241
  • Tidskriftsartikel (refereegranskat)abstract
    • This review summarizes the knowledge on striated domains, which are ordered assemblies of transmembrane peptides and lipids under gel-state conditions. The structure, mechanism of function and utility of this system as a model for domain formation is described, resulting in a molecular description of the domains and a discussion on the relevance of these insights for the function/formation and structure of similar domains in biological membranes.
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  • Resultat 1-4 av 4

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