Chimeric opsin gpcr proteins
AssigneeUniversitäT Bern
InventorsSonja KLEINLOGEL, Michiel VAN WYK
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Abstract
A chimeric opsin GPCR protein comprising a light-sensitive upstream opsin portion and a target GPCR portion comprising a chimeric CT is provided that expresses strongly and is targeted into the correct subcellular compartment of target cells. The chimeric opsin GPCR protein activates efficiently the native G-protein specific to the target GPCR pathway eliciting a physiological response comparable to the native target GPCR. Nucleic acid molecules encoding the chimeric opsin GPCR protein as well as a capsids, vectors, cells and carriers comprising or expressing the chimeric opsin GPCR protein are also provided. Furthermore, a method of genetically engineering a chimeric opsin GPCR protein and medical applications of the chimeric opsin GPCR protein are provided.
Claims24
1-85. (canceled)
A chimeric opsin GPCR protein comprising seven transmembrane domains (TM1 to TM7) connected by extra- and intracellular loops (ELs and ILs),
- wherein the chimeric opsin GPCR protein comprises a first light-sensitive opsin portion and a second GPCR portion (target GPCR portion);
- wherein the first light-sensitive opsin portion comprises a chromophore pocket covalently bound to a chromophore and a truncated C-terminal (CT) domain with a truncation site located at least 7 amino acids downstream of a NR(K)Q motif,
- and
- wherein the second GPCR portion (target GPCR portion) comprises a C-terminal domain (target-GPCR-CT) positioned downstream of the truncated C-terminal domain of the opsin portion.
Dependencies are inferred from the claim text.