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, 74 (10), 4285-7

Structure of Native Renilla Reinformis Luciferin

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Structure of Native Renilla Reinformis Luciferin

K Hori et al. Proc Natl Acad Sci U S A.

Abstract

The structure of native luciferin from the bioluminescent coelenterate Renilla reniformis is shown to be 3,7-dihydro-2-(p-hydroxybenzyl)-6-(p-hydroxyphenyl)-8-benzylimidazo[1,2-a]pyrazin-3-one by mass spectral analysis of synthetic luciferin and the luciferin derived from a protein directly involved in the bioluminescent system. A previous report of the molecular weight of luciferin is shown to be incorrect by reexamination of the spectral data and by synthesis of two derivatives. Detailed analysis of kinetic, emission, and quantum yield data for the isolated and synthetic luciferins confirms this structure. Confirmation of this structure in a number of species from different phyla suggests a common substrate for a variety of bioluminescent marine organisms.

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