PubMed Health⌕ Search

PubMed · 6615501

Lipid bilayer dynamics and rhodopsin-lipid interactions: new approach using high-resolution solid-state 13C NMR.

Abstract

High-resolution, solid-state 13C NMR spectra have been obtained for unsonicated multilamellar dispersions of 1,2-dilauryl-sn-glycero-3-phosphocholine (DLPC), recombinant membranes containing DLPC and rhodopsin, and native retinal rod disk membranes. The roles of 1H dipolar decoupling, 1H-13C cross-polarization, and magic-angle sample spinning have been investigated. Rotating-frame 13C relaxation times have been measured and are discussed in terms of lipid bilayer dynamics and rhodopsin-lipid interactions.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

M D Sefcik, J Schaefer, E O Stejskal, R A McKay, J F Ellena, S W Dodd, M F Brown. 1983-08-12. Lipid bilayer dynamics and rhodopsin-lipid interactions: new approach using high-resolution solid-state 13C NMR.. https://doi.org/10.1016/0006-291x(83)90668-x

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Fluorophore-encapsulated solid-supported bilayer vesicles: a method for studying membrane permeation processes.

This letter describes a new method for studying the interaction of the membrane-lysing enzyme phospholipase A(2) (PLA(2)) with phospholipid bilayers by simultaneous measurements of enzyme binding and vesicle lysis using surface plasmon resonance (SPR) and permeabilization using surface plasmon field-enhanced fluorescence spectroscopy (SPFS). The PLA(2) inhibitor dimethyl-eicosadienoic acid was incorporated into the surface-bound vesicles and support bilayer in order to study its role in preventing PLA(2)-mediated vesicle lysis. This methodology has a generic applicability for the study of a range of membrane-disrupting agents.

Fatty Acids, Unsaturated↗

Syntheses of conjugated octadecadienoic acids.

Three approaches for the synthesis of octadecadienoic acids with conjugated double bond systems are presented: synthesis of (10Z, 12Z)-octadecadienoic acid via an enyne-substructure; the use of an educt with a conjugated double bond system for the synthesis of (10E, 12E)-octadecadienoic acid; and the Suzuki cross coupling for the synthesis of (7E,9Z)-octadecadienoic acid.

Fatty Acids, Unsaturated↗

A bacterium that has three pathways to regulate membrane lipid fluidity.

Well-studied bacteria such as Bacillus subtilis and Escherichia coli each have only a single pathway for synthesis of the unsaturated fatty acids required to make functional membrane lipids. In marked contrast, unsaturated fatty acid synthesis in Pseudomonas aeruginosa proceeds by three distinct pathways.

Fatty Acids, Unsaturated↗