Stochastic Sensing Through Covalent Interactions
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Abstract
A system and method for stochastic sensing in which the analyte covalently bonds to the sensor element or an adaptor element. If such bonding is irreversible, the bond may be broken by a chemical reagent. The sensor element may be a protein, such as the engineered PSH type or αHL protein pore. 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 signal. Possible signals include change in electrical current, change in force, and change in fluorescence. 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 be detected.
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Citations
64 Claims
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1-30. -30. (canceled)
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31. A method for stochastically sensing at least one reactive analyte in a solution comprising:
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providing a sensing device separated into a trans chamber and a cis chamber by a divider, wherein an engineered protein pore is operably disposed in the divider; providing a detection system operable to detect a current between the cis and trans chambers; providing an ionic solution containing at least one reactive analyte capable of covalently bonding to the protein pore and thereby altering the current between the cis and trans chambers to the cis or trans chamber; and detecting the current between the cis and trans chambers, wherein a change in the current between the cis and trans chambers indicates whether the analyte is covalently bound to the protein pore; and using the detected current, stochastically sensing the at least one analyte. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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32. (canceled)
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43-53. -53. (canceled)
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54. A method for stochastically sensing at least one reactive analyte in a solution comprising:
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introducing an ionic solution containing at least one reactive analyte capable of covalently bonding to an engineered protein pore into a sensing device comprising a trans chamber and a cis chamber separated by a divider, wherein the divider comprises the engineered protein pore operably disposed therein; detecting a change in current between the cis and trans chambers, wherein the change in the current between the cis and trans chambers indicates whether the analyte is covalently bound to the protein pore; using the change in detected current to stochastically sense the reactive analyte. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification