Functional domains in flavobacterium okeanokoities (foki) restriction endonuclease
US5436150A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1993 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Sep 27, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N9/22
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present inventors have identified the recognition and cleavage domains of the FokI restriction endonuclease. Accordingly, the present invention relates to DNA segments encoding the recognition and cleavage domains of the FokI restriction endonuclease, respectively. The 41 kDa N-terminal fragment constitutes the FokI recognition domain while the 25 kDa C-terminal fragment constitutes the FokI cleavage nuclease domain. The present invention also relates to hybrid restriction enzymes comprising the nuclease domain of the FokI restriction endonuclease linked to a recognition domain of another enzyme. One such hybrid restriction enzyme is Ubx-F.sub.N. This enzyme contains the homeo domain of Ubx linked to the cleavage or nuclease domain of FokI. Additionally, the present invention relates to the construction of two insertion mutants of FokI endonuclease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.