TY  - JOUR
A1  - Grimm, Christiane
A1  - Meyer, Thomas
A1  - Czapla, Sylvia
A1  - Nikolaus, Jörg
A1  - Scheidt, Holger A.
A1  - Vogel, Alexander
A1  - Herrmann, Andreas
A1  - Wessig, Pablo
A1  - Huster, Daniel
A1  - Müller, Peter
T1  - Structure and dynamics of molecular rods in membranes application of a Spin-Labeled rod
JF  - Chemistry - a European journal
N2  - Molecular rods consisting of a hydrophobic backbone and terminally varying functional groups have been synthesized for applications for the functionalization of membranes. In the present study, we employ a spin-labeled analogue of a recently described new class of molecular rods to characterize their dynamic interactions with membranes. By using the different approaches of ESR and NMR spectroscopy, we show that the spin moiety of the membrane-embedded spin-labeled rod is localized in the upper chain/glycerol region of membranes of different compositions. The rod is embedded within the membrane in a tilted orientation to adjust for the varying hydrophobic thicknesses of these bilayers. This orientation does not perturb the membrane structure. The water solubility of the rod is increased significantly in the presence of certain cyclodextrins. These cyclodextrins also allow the rods to be extracted from the membrane and incorporated into preformed membranes. The latter will improve the future applications of these rods in cellular systems as stable membrane-associated anchors for the functionalization of membrane surfaces.
KW  - hydrophobic mismatch
KW  - membranes
KW  - molecular rods
KW  - phospholipids
KW  - spiro compounds
Y1  - 2013
U6  - https://doi.org/10.1002/chem.201202500
SN  - 0947-6539
VL  - 19
IS  - 8
SP  - 2703
EP  - 2710
PB  - Wiley-VCH
CY  - Weinheim
ER  -