Elastic energy driven polymerization.
We present a molecular system where polymerization is controlled externally by tuning the elastic energy of the monomers. The elastic energy, provided by a DNA molecular spring, destabilizes the monomer state through a process analogous to domain swapping. This energy can be large (of approximately 10 kT) and thus drive polymerization at relatively low monomer concentrations. The monomer-dimer equilibrium provides a measurement of the elastic energy of the monomer, which in this construction appears limited by kink formation in the DNA molecular spring, in accord with previous theoretical and experimental investigations of the elasticity of sharply bent DNA.
Wang
Andrew
A
Department of Physics & Astronomy, University of California, Los Angeles, California, USA.
Zocchi
Giovanni
G
D000465:Algorithms; D002851:Chromatography, High Pressure Liquid; D004247:DNA / Q000737:chemistry* / Q000378:metabolism; D019281:Dimerization; D004548:Elasticity; D004591:Electrophoresis, Polyacrylamide Gel; D051528:Guanylate Kinases / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D008958:Models, Molecular; D016297:Mutagenesis, Site-Directed; D009169:Mycobacterium tuberculosis; D011485:Protein Binding; D013816:Thermodynamics
D004247:DNA; D051528:Guanylate Kinases