Issue 14, 2010

Protein cage nanoparticles as secondary building units for the synthesis of 3-dimensional coordination polymers

Abstract

Coordination polymers (CPs) have garnered much attention in the past several years for the relative facility of their synthesis and potential benefit in diverse applications such as gas separation, energy storage, drug delivery and as novel bio-imaging compounds. To date there have been relatively few reports of CP assembly from peptide-based precursors. CPs generated from biomolecules offer several potential advantages over their synthetic counterparts including extensive structural diversity, intrinsic chirality and the capacity for introduction of catalytic or similar biological functionalities. Here we describe the construction of CPs utilizing protein cage nanoparticles (PCN) as secondary building units. The dodecameric Dps protein cage from the hyperthermophilic archeon Sulfolobus solfataricus was modified for metal binding by chemical ligation of metal-chelating functionalities to the cage exterior. Treatment of modified PCN with transition metals results in the rapid formation of PCN–metal assemblies. These assemblies are characterized by a combination of dynamic light scattering, electron microscopy, small angle X-ray scattering and gas sorption studies.

Graphical abstract: Protein cage nanoparticles as secondary building units for the synthesis of 3-dimensional coordination polymers

Supplementary files

Article information

Article type
Communication
Submitted
01 Mar 2010
Accepted
30 Apr 2010
First published
26 May 2010

Soft Matter, 2010,6, 3167-3171

Protein cage nanoparticles as secondary building units for the synthesis of 3-dimensional coordination polymers

C. C. Broomell, H. Birkedal, C. L. P. Oliveira, J. S. Pedersen, J. Gertenbach, M. Young and T. Douglas, Soft Matter, 2010, 6, 3167 DOI: 10.1039/C0SM00039F

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