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Open AccessCommunication

Luminescence of Cypridina Luciferin in the Presence of Human Plasma Alpha 1-Acid Glycoprotein

Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Hokkaido Center, Sapporo 062-8517, Japan
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Int. J. Mol. Sci. 2020, 21(20), 7516; https://doi.org/10.3390/ijms21207516
Received: 28 August 2020 / Revised: 25 September 2020 / Accepted: 10 October 2020 / Published: 12 October 2020
The enzyme Cypridina luciferase (CLase) enables Cypridina luciferin to emit light efficiently through an oxidation reaction. The catalytic mechanism on the substrate of CLase has been studied, but the details remain to be clarified. Here, we examined the luminescence of Cypridina luciferin in the presence of several proteins with drug-binding ability. Luminescence measurements showed that the mixture of human plasma alpha 1-acid glycoprotein (hAGP) and Cypridina luciferin produced light. The total value of the luminescence intensity over 60 s was over 12.6-fold higher than those in the presence of ovalbumin, human serum albumin, or bovine serum albumin. In the presence of heat-treated hAGP, the luminescence intensity of Cypridina luciferin was lower than in the presence of intact hAGP. Chlorpromazine, which binds to hAGP, showed an inhibitory effect on the luminescence of Cypridina luciferin, both in the presence of hAGP and a recombinant CLase. Furthermore, BlastP analysis showed that hAGP had partial amino acid sequence similarity to known CLases in the region including amino acid residues involved in the drug-binding ability of hAGP. These findings indicate enzymological similarity between hAGP and CLase and provide insights into both the enzymological understanding of CLase and development of a luminescence detection method for hAGP. View Full-Text
Keywords: Cypridina luciferin; cypridinid luciferin; human plasma alpha 1-aicd glycoprotein; Cypridina luciferase; cypridinid luciferase; bioluminescence Cypridina luciferin; cypridinid luciferin; human plasma alpha 1-aicd glycoprotein; Cypridina luciferase; cypridinid luciferase; bioluminescence
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MDPI and ACS Style

Kanie, S.; Komatsu, M.; Mitani, Y. Luminescence of Cypridina Luciferin in the Presence of Human Plasma Alpha 1-Acid Glycoprotein. Int. J. Mol. Sci. 2020, 21, 7516. https://doi.org/10.3390/ijms21207516

AMA Style

Kanie S, Komatsu M, Mitani Y. Luminescence of Cypridina Luciferin in the Presence of Human Plasma Alpha 1-Acid Glycoprotein. International Journal of Molecular Sciences. 2020; 21(20):7516. https://doi.org/10.3390/ijms21207516

Chicago/Turabian Style

Kanie, Shusei; Komatsu, Mami; Mitani, Yasuo. 2020. "Luminescence of Cypridina Luciferin in the Presence of Human Plasma Alpha 1-Acid Glycoprotein" Int. J. Mol. Sci. 21, no. 20: 7516. https://doi.org/10.3390/ijms21207516

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