Trusova VM, Gorbenko GP. Fluorescence study on aggregated lysozyme and lipid bilayer interactions.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2012;
113:51-5. [PMID:
22652331 DOI:
10.1016/j.jphotobiol.2012.05.001]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 04/20/2012] [Accepted: 05/01/2012] [Indexed: 11/25/2022]
Abstract
Fluorescent probes 1,6-diphenyl-1,3,5-hexatriene (DPH), pyrene, 4-dimethylaminochalcone (DMC) and 4-p-(dimethylaminostyryl)-1-dodecylpyridinium (DSP-12) have been utilized to monitor the impact of lysozyme (Lz) oligomers on physicochemical properties of phosphatidylcholine/cardiolipin (PC/CL) membranes. Analysis of spectral responses of the employed probes revealed the reduction of membrane free volume and dehydration of lipid bilayer surface upon incorporation of Lz self-assemblies. Hydrophobic interactions were found to control the binding of Lz oligomers to the lipid bilayer. Comparison of the effects of Lz monomers, oligomers and fibrils showed that soluble oligomeric intermediates exert the most destructive influence on membrane properties.
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