Article
Role of key residues of obelin in coelenterazine binding and conversion into 2-hydroperoxy adduct.
Journal of photochemistry and photobiology. B, Biology - 5 Oct 2013
Eremeeva Elena V, Markova Svetlana V, van Berkel Willem J H, Vysotski Eugene S
Abstract excerpt
Bioluminescence of a variety of marine organisms is caused by monomeric Ca(2+)-regulated photoproteins, to which a peroxy-substituted coelenterazine, 2-hydroperoxycoelenterazine, is firmly bound. From the spatial structure the side chains of Tyr138, His175, Trp179, and Tyr190 of obelin are situated within the substrate-binding pocket at hydrogen bond distances with different atoms of the...
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