Metallosomes
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Updated: Oct 18, 2026

Standards for Quantitative Metalloproteomic Analysis Using Size Exclusion ICP-MS
Published on: April 13, 2016
J F Hainfeld1, F R Furuya, R D Powell
1Biology Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
Abstract:
Structures and ordered arrays containing organometallic particles have potential application in nanofabrication, smaller computer components, optical devices, sensors, and membrane probes and as detection agents. Here, we describe construction of gold clusters covalently attached to lipids and their use in forming typical lipid structures: micelles, liposomes ("metallosomes"), and sheets on an air-water interface. Two sizes of gold clusters were used, undecagold, with an 11-gold atom core 0.8 nm in diameter, and the larger Nanogold, with a 1.4-nm gold core. The morphology of the structures formed was determined by electron microscopy at a resolution at which single gold-lipid molecules were visualized. Further modification by additional catalytic metal deposition enhanced detectability. The approach is flexible and permits a wide variety of metal particle structures to be created using known lipid structures as templates. Additionally, these gold-lipids may serve as useful membrane labels.
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