The potential use of atomic force microscopy (AFM) to image the mode of assembly and to measure the corresponding lattice parameters of model systems consisting of ordered aggregates of cardiolipin molecules has been investigated. An unprecedented resolution of about 0.2 nm has been achieved on suitably prepared specimens. This enables the orientational order and the positional correlations of the individual molecules in the lattice to be defined, and submolecular details, such as the acyl chains and the polar groups, to be imaged. The structural parameters derived from AFM have been compared with those obtained by transmission electron diffraction of the same specimen and found to be in excellent agreement. AFM turns out to be a powerful, and probably a unique tool to reveal local phase variations in systems, such as biological membranes, that have non-homogeneous composition and organization.

Atomic force microscopy observations of acyl chains in phospholipids / Muscatello, Umberto; G., Valdre; U., Valdre. - In: JOURNAL OF MICROSCOPY. - ISSN 0022-2720. - 182:(1996), pp. 200-207. [10.1111/j.1365-2818.1996.tb04797.x]

Atomic force microscopy observations of acyl chains in phospholipids

MUSCATELLO, Umberto;
1996

Abstract

The potential use of atomic force microscopy (AFM) to image the mode of assembly and to measure the corresponding lattice parameters of model systems consisting of ordered aggregates of cardiolipin molecules has been investigated. An unprecedented resolution of about 0.2 nm has been achieved on suitably prepared specimens. This enables the orientational order and the positional correlations of the individual molecules in the lattice to be defined, and submolecular details, such as the acyl chains and the polar groups, to be imaged. The structural parameters derived from AFM have been compared with those obtained by transmission electron diffraction of the same specimen and found to be in excellent agreement. AFM turns out to be a powerful, and probably a unique tool to reveal local phase variations in systems, such as biological membranes, that have non-homogeneous composition and organization.
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Atomic force microscopy observations of acyl chains in phospholipids / Muscatello, Umberto; G., Valdre; U., Valdre. - In: JOURNAL OF MICROSCOPY. - ISSN 0022-2720. - 182:(1996), pp. 200-207. [10.1111/j.1365-2818.1996.tb04797.x]
Muscatello, Umberto; G., Valdre; U., Valdre
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/307278
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