Nano Archive

Immobilisation of proteins by atomic clusters on surfaces

Palmer, Richard E. and Leung, Carl (2007) Immobilisation of proteins by atomic clusters on surfaces. TRENDS IN BIOTECHNOLOGY, 25 (2). pp. 48-55.

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In this Opinion article, we describe a nanotechnology-based approach to immobilize and orient proteins onto surfaces using atomic clusters prepared by physical methods. This is relevant to future protein biochips where dilute arrays of protein binding sites, each designed to immobilize no more than one protein molecule, would be ideal. In the case of a surface consisting of size-selected atomic gold clusters, proteins containing free cysteine residues can chemisorb directly to the bare cluster surface, thus effecting oriented immobilisation. The selection of atomic gold clusters in the size range 1-100 atoms (< 3 nm in diameter) is intended to ensure that, typically, only one protein can bind directly to the cluster surface. These nanoclusters of a smaller size scale than that of the protein present minimal contact between the gold and the protein, and hence imply a reduced risk of protein denaturing compared with gold films or extended surfaces.

Item Type:Article
Subjects:Biomedical Science > Nanobiotechnology
Biomedical Science > Nanomedicine
ID Code:771
Deposited By:Farnush Anwar
Deposited On:15 Dec 2008 10:34
Last Modified:13 Jan 2009 14:25

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