Compositions, devices, systems, and methods for using a nanopore
Devices and methods that can detect and control an individual polymer in a mixture is acted upon by another compound, for example, an enzyme, in a nanopore are provided. The devices and methods also determine (˜>50 Hz) the nucleotide base sequence of a polynucleotide under feedback control or using signals generated by the interactions between the polynucleotide and the nanopore. The invention is of particular use in the fields of molecular biology, structural biology, cell biology, molecular switches, molecular circuits, and molecular computational devices, and the manufacture thereof.
1. A device for nucleic acid sequencing comprising:
an array of at least 100 nanopores,
above the array of at least 100 nanopores, in fluidic contact with the array of at least 100 nanopores, an upper fluidic region comprising an upper electrode, the upper fluidic region comprising nucleic acid molecules,
below the array of at least 100 nanopores, an array of discrete fluidic regions, each discrete fluidic region in fluidic contact with a nanopore, and each discrete fluidic region comprising a lower electrode, wherein there is no direct fluidic contact between the discrete fluidic regions, and
below the array of discrete fluidic regions, an array of electronic circuits, each electronic circuit comprising an amplifier in electrical contact with the fluidic region above it,
wherein voltage is applied between the upper electrode and the lower electrodes, resulting in translocation of a nucleic acid molecule through a plurality of the nanopores, and whereby a measured electrical signal is used to determine sequences of a plurality of nucleic acid molecules.
2. The device of claim 1 wherein the device comprises a semiconductor substrate in which the electronic circuits are formed.
3. The device of claim 1 wherein the electronic circuits further comprise analog to digital converters or memory.
4. The device of claim 1 wherein the nanopores comprise protein nanopores.
5. The device of claim 4 wherein the protein nanopores comprise alpha-hemolysin proteins.
6. The device of claim 4 wherein the protein nanopores are within biological membranes.
7. The device of claim 1 wherein the nanopores comprise solid state nanopores.
8. The device of claim 1 wherein the nanopores comprise hybrid solid state-protein nanopores.
9. The device of claim 1 wherein the upper fluidic region further comprises enzymes for control of translocation rate of the nucleic acid molecule.
10. The device of claim 9 wherein the enzymes for control of translocation rate of the nucleic acid molecule comprise polymerases.
11. The device of claim 9 wherein the enzymes for control of translocation rate of the nucleic acid molecule comprise exonucleases.
12. The device of claim 1 wherein the nucleic acid molecule comprises DNA.
13. The device of claim 1 comprising up to 400,000 nanopores.