Biomolecule sequencing devices, systems and methods
First Claim
1. A system for detecting a biomolecule using at least one pair of nanogap electrodes, comprising:
- a fluid flow unit comprising at least one pump for directing a plurality of monomers with reference substances bound thereto to the at least one pair of nanogap electrodes, wherein the reference substances comprise a first reference substance bound to a first monomer and a second reference substance bound to a second monomer, wherein the first reference substance is different than the second reference substance; and
a computer processor coupled to the at least one pair of nanogap electrodes and programmed to;
(a) measure tunneling nanocurrent signals resulting from the plurality of monomers with reference substances bound thereto using the at least one pair of nanogap electrodes, wherein the tunneling nanocurrent signals correspond to the reference substances, wherein the first reference substance and the second reference substance correspond to different tunneling nanocurrent signals; and
(b) identify a monomer of the plurality of monomers with reference substances bound thereto based on the tunneling nanocurrent signals measured in (a).
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Accused Products
Abstract
Devices, systems and methods for sequencing protein samples are provided. In some examples, currents generated when a monomer passes through between electrodes of a nanogap electrode pair are measured for each of several different distances, so that monomers are identified when compared to a reference physical quantity of a known monomer, which may be obtained from a current measured with a similar inter-electrode distance(s) at which each of plural kinds of monomers are identifiable and ordered with predetermined accuracy and based on a detected physical quantity obtained from a tunneling current, which may be further normalized by the use of one or more reference substances.
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Citations
24 Claims
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1. A system for detecting a biomolecule using at least one pair of nanogap electrodes, comprising:
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a fluid flow unit comprising at least one pump for directing a plurality of monomers with reference substances bound thereto to the at least one pair of nanogap electrodes, wherein the reference substances comprise a first reference substance bound to a first monomer and a second reference substance bound to a second monomer, wherein the first reference substance is different than the second reference substance; and a computer processor coupled to the at least one pair of nanogap electrodes and programmed to; (a) measure tunneling nanocurrent signals resulting from the plurality of monomers with reference substances bound thereto using the at least one pair of nanogap electrodes, wherein the tunneling nanocurrent signals correspond to the reference substances, wherein the first reference substance and the second reference substance correspond to different tunneling nanocurrent signals; and (b) identify a monomer of the plurality of monomers with reference substances bound thereto based on the tunneling nanocurrent signals measured in (a). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of detecting a biomolecule, comprising:
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(a) providing a plurality of monomers with reference substances bound thereto, wherein the reference substances comprise a first reference substance bound to a first monomer and a second reference substance bound to a second monomer, wherein the first reference substance is different than the second reference substance; (b) using at least one pair of nanogap electrodes to measure tunneling nanocurrent signals resulting from the plurality of monomers with reference substances bound thereto, the tunneling nanocurrent signals corresponding to the reference substances, wherein the the first reference substance and the second reference substance correspond with different tunneling nanocurrent signals; and (c) identifying a monomer of the plurality of monomers with reference substances bound thereto based on the tunneling nanocurrent signals measured in (b). - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification