Control of enzyme translocation in nanopore sequencing
US10473639B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2019 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Apr 8, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q2565/631
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to devices and methods for nanopore sequencing. Methods for controlling translocation of through the nanopore are disclosed. The rate of transport of the template nucleic acids through the nanopore can be controlled using a translocating enzyme having two slow, or kinetically observable kinetic steps. The translocating enzyme and reaction conditions can be selected such that the translocating enzyme exhibits two kinetic steps wherein each of the kinetic steps has a rate constant, and the ratio of the rate constants of the kinetic steps is from 5:1 to 1:5. The invention also provides for using the signals from n-mers to provide sequence information, for example where the system has less than single base resolution. The invention includes arrays of nanopores having incorporated electronic circuits, for example, in CMOS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.