New Perspectives Related to the Bioluminescent System in Dinoflagellates: Pyrocystis lunula , a Case Study

International Journal of Molecular Sciences
Carlos FajardoFrancisco Javier Fernandez-Acero

Abstract

Pyrocystis lunula is considered a model organism due to its bioluminescence capacity linked to circadian rhythms. The mechanisms underlying the bioluminescent phenomenon have been well characterized in dinoflagellates; however, there are still some aspects that remain an enigma. Such is the case of the presence and diversity of the luciferin-binding protein (LBP), as well as the synthesis process of luciferin. Here we carry out a review of the literature in relation to the molecular players responsible for bioluminescence in dinoflagellates, with particular interest in P. lunula. We also carried out a phylogenetic analysis of the conservation of protein sequence, structure and evolutionary pattern of these key players. The basic structure of the luciferase (LCF) is quite conserved among the sequences reported to date for dinoflagellate species, but not in the case of the LBP, which has proven to be more variable in terms of sequence and structure. In the case of luciferin, its synthesis has been shown to be complex process with more than one metabolic pathway involved. The glutathione S-transferase (GST) and the P630 or blue compound, seem to be involved in this process. In the same way, various hypotheses regarding the role of...Continue Reading

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Related Concepts

Circadian Rhythms
Glutathione S-Transferase
Health Care Systems
Literature
Luciferases
Luminescent Proteins
Signal Pathways
Present
Bioluminescence
Binding Protein

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