Binding protein as biosensors
First Claim
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1. A biosensor comprising:
- a) at least one mutated glucose/galactose binding protein having at least one substituted or added cysteine group; and
b) at least one sensor surface wherein said mutated binding protein is coupled through said cysteine group to said surface;
wherein said at least one sensor surface provides a detectable signal resulting from a change in refractive index when said mutated binding protein binds to analyte.
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Abstract
The invention is directed to compositions of mutated binding proteins containing thiol groups for coupling to sensor surfaces, analyte biosensor devices derived there from, and methods of their use as analyte biosensors both in vitro and in vivo.
60 Citations
12 Claims
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1. A biosensor comprising:
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a) at least one mutated glucose/galactose binding protein having at least one substituted or added cysteine group; and b) at least one sensor surface wherein said mutated binding protein is coupled through said cysteine group to said surface; wherein said at least one sensor surface provides a detectable signal resulting from a change in refractive index when said mutated binding protein binds to analyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12)
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8. The biosensor of 7 wherein said mutated glucose/galactose binding protein further includes a histidine tag.
Specification