Recognition and modulation of cytochrome c's redox properties using an amphiphilic homopolymer.
An amphiphilic homopolymer scaffold has been used to bind to the protein, cytochrome c. This interaction is analyzed using cyclic voltammetry, native gel electrophoresis, UV-visible absorption, and circular dichroism spectroscopy. The polymer binds to cytochrome c with micromolar affinity and the association of polymer with cytochrome c leads to a structural change of the protein. This conformational change exposes the heme unit of the protein, which affords an opportunity to reversibly modulate its electron-transfer properties. We have also shown that the electrostatic binding of polymer to cytochrome c can be used to disrupt its interaction with its natural partner, cytochrome c peroxidase.
Sandanaraj
Britto S
BS
Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA.
Bayraktar
Halil
H
Krishnamoorthy
Kothandam
K
Knapp
Michael J
MJ
Thayumanavan
S
S
D045305:Cytochromes c' / Q000737:chemistry*; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry*; D011485:Protein Binding; D011487:Protein Conformation; D055672:Static Electricity
D045305:Cytochromes c'; D011108:Polymers