High temperature ion channels and pores
The present invention includes an apparatus, system and method for stochastic sensing of an analyte to a protein pore. The protein pore may be an engineer protein pore, such as an ion channel at temperatures above 55° C. and even as high as near 100° C. The analyte may be any reactive analyte, including chemical weapons, environmental toxins and pharmaceuticals. The analyte covalently bonds to the sensor element to produce a detectable electrical current signal. Possible signals include change in electrical current. Detection of the signal allows identification of the analyte and determination of its concentration in a sample solution. Multiple analytes present in the same solution may also be detected.
1. A method for sensing one or more analytes in a solution comprising:
disposing operably one or more protein pores in a divider between a first and a second chamber exposing said one or more protein pores to a solution suspected of comprising one or more analytes at a temperature at or above 55° C.; and
detecting a current between the first and a second chambers with a current detector when the one or more protein pores are exposed to a solution suspected of comprising the one or more analytes at a temperature at or above 55° C., wherein each of the one or more protein pores comprise
at least one high temperature stabilization molecular adapter that stabilizes the one or more protein pores at a temperature at or above 55° C. and the one or more analytes produces a change in current between the first and a second chambers detectable by the current detector.
2. The method of claim 1 , wherein the one or more protein pores are engineered protein pores.
3. The method of claim 1 , wherein one or more of the one or more protein pores is an αHL pore.
4. The method of claim 1 , wherein the solution is a pH buffered KCl solution.
5. The method of claim 1 , wherein the one or more analytes comprise an environmental toxin.
6. The method of claim 1 , wherein the one or more analytes comprise a chemical weapon.
7. The method of claim 1 , wherein the one or more analytes comprise a pharmaceutical.
8. The method of claim 1 , wherein the one or more analytes comprise an arsenical.
9. The method of claim 1 , wherein the solution comprises an ionic solution suspected of comprising one or more chemically distinct analytes capable of bonding with the one or more protein pores.
10. The method of claim 1 , wherein the current detector is capable of stochastic sensing.
11. The method of claim 1 , wherein the change in current comprises a change in the magnitude of the current.
12. The method of claim 1 , wherein the at least one high temperature stabilization molecular adaptor comprises β-cyclodextrin (βCD).