Linked peptides fluorogenic biosensors
US8426153B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2008 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Mar 17, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/582
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Biosensors, compositions comprising biosensors, methods of producing biosensors, and methods of using biosensors are disclosed. The biosensors comprise a fluorogen-activating peptide and a blocking peptide. The fluorogen-activating peptide and blocking peptide are covalently linked through a peptide linker. The blocking peptide associates with the fluorogen-activating peptide thereby blocking an active domain of the fluorogen-activating peptide when the linker is in an unmodified state. The peptide linker may contain an amino acid sequence that is specifically recognized as a modification substrate by a cognate enzyme. The fluorogen-activating peptide and the blocking peptide at least partially disassociate when the linker is modified by an enzyme, thereby allowing the fluorogen-activating peptide to bind a cognate fluorogen and modulate a fluorescence signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.