Polyrotaxanes and uses thereof
AssigneePurdue Research Foundation
InventorsDavid H. Thompson, Seok-Hee Hyun, Kyle J. Wright
Life of this patent
Estimating the term…
Abstract
A polyrotaxane containing an affinity binding group has been designed and prepared. The polyrotaxane of the invention can be used for characterization and determination of the three-dimensional structures of biological molecules, such as proteins.
Claims8
A polyrotaxane comprising a plurality of macrocyclic molecules, a linear axle molecule threading through the macrocyclic molecules, and a capping group at each end of the linear axle molecule, wherein one or more of the macrocyclic molecules comprise an affinity binding group and wherein the macrocyclic molecules are laterally and rotationally mobile along the linear axle molecule, wherein the affinity binding group is a metal chelate having a chelating agent moiety and a metal ion, wherein the capping group is linked to the linear moiety through a bond,
- wherein said metal ion is Ni2+, and
- wherein the polyrotaxane has the following structure
- wherein x is 113;
- m is 17;
- and n is 1.1.
A method of characterizing or determining a three-dimensional structure of a biological molecule, comprising the steps of
- (a) contacting a polyrotaxane with the biological molecule to form a complex;
- (b) subjecting the complex to cryogenic electron microscopy;
- and
- (c) analyzing data collected from the cryogenic electron microscopy experiment wherein said polyrotaxane comprises a plurality of macrocyclic molecules, a linear axle molecule threading through the macrocyclic molecules, and a capping group at each end of the linear axle molecule, wherein one or more of the macrocyclic molecules comprise an affinity binding group and wherein the macrocyclic molecules are laterally and rotationally mobile along the linear axle molecule, wherein the affinity binding group is a metal chelate having a chelating agent moiety and a metal ion, wherein the capping group is linked to the linear moiety through a bond, and
- wherein said metal ion is Ni2+;
- wherein the polyrotaxane has the following structure
- wherein x is 113;
- m is 17;
- and n is 1.1.
Dependencies are inferred from the claim text.