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Spectral components of bioluminescence of aequorin and obelin

Paper ID Volume ID Publish Year Pages File Format Full-Text
30560 44486 2008 6 PDF Available
Title
Spectral components of bioluminescence of aequorin and obelin
Abstract

Complex bioluminescence spectra of photoproteins from marine coelenterates – jellyfish Aequorea victoria and hydroid Obelia longissima, and photoluminescence spectra of the bioluminescent reaction products (Ca2+-discharged photoproteins) were deconvolved into components. The bioluminescence spectra of aequorin were found to include three, the bioluminescence spectra of obelin – four, and the photoluminescence spectra of the Ca2+-discharged photoproteins – only two components. The spectral components were assigned to one unionized and three ionized forms of coelenteramide. The changes in acidity of the excited coelenteramide molecule are discussed. The differences in bioluminescence and photoluminescence spectra are considered, with protonic environment of coelenteramide taken into account.

Keywords
Bioluminescence; Photoprotein; Spectral components; Proton transfer
First Page Preview
Spectral components of bioluminescence of aequorin and obelin
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 92, Issue 2, 21 August 2008, Pages 117–122
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering