Spatially addressable control of polymerase activity
US12344876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2020 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Dec 16, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Y207/07007
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Multiple polynucleotides having different, arbitrary sequences are synthesized on the surface of an array by spatial control of polymerase activity. The polymerase is a template-independent polymerase such as terminal deoxynucleotidyl transferase (TdT). Spatial control of polymerase activity is implemented by localized changes in redox-pH conditions. A single species of nucleotide is added and incorporated on growing polynucleotide strands at locations on the array where the polymerase is active. A washing step removes the polymerase and free nucleotides. This process may be repeated multiple times changing both the location of polymerase activity and the species of nucleotide thereby synthesizing different polynucleotides in parallel on the surface of the array. Polymerase activity may be regulated by removing a blocking group attached to a His-tag sequence on the polymerase, a change in pH, or release of encapsulated inhibitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.