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Hybrid Minimal Core Streptavidin-Obelin as a Versatile Reporter for Bioluminescence-based Bioassay
Eugenia E Bashmakova1,2, Vasilisa V Krasitskaya1, Alexander N Kudryavtsev1
1Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia.
Abstract:
Ca2+ -regulated photoprotein obelin was genetically fused with a minimum-sized core streptavidin. Hybrid protein (SAV-OL) was produced by bacterial expression and applied as a specific bioluminescent probe in diverse solid-phase assays. The obtained results clearly demonstrate specific activity of each domain indicating its proper folding with favorable space orientation. SAV-OL has been shown to be a much more sensitive label than the chemical conjugate of a full-length streptavidin with obelin.
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