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Synthesis of dehydroluciferin by firefly luciferase: Effect of dehydroluciferin, coenzyme A and nucleoside triphosphates on the luminescent reaction

Title
Synthesis of dehydroluciferin by firefly luciferase: Effect of dehydroluciferin, coenzyme A and nucleoside triphosphates on the luminescent reaction
Type
Article in International Scientific Journal
Year
1997
Authors
fontes, r
(Author)
FMUP
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dukhovich, a
(Author)
Other
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sillero, a
(Author)
Other
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sillero, mag
(Author)
Other
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Journal
Vol. 237
Pages: 445-450
ISSN: 0006-291X
Publisher: Elsevier
Scientific classification
FOS: Natural sciences > Biological sciences
Other information
Authenticus ID: P-001-AWP
Abstract (EN): The formation of dehydroluciferin (L) from luciferin (LH2) in the reaction catalyzed by firefly luciferase (EC 1.13.12.7) has been studied. The E.LH2-AMP complex may follow two different pathways: towards production of light and towards the synthesis of the E.L-AMP complex, This last step has an inhibitory effect on light emission as molecules of the enzyme are trapped in a light unproductive complex, The effects of CoA and nucleoside 5'-triphosphates (NTPs) on light emission are quantitatively different, CoA combines with the L moiety of the E.L-AMP complex, yielding L-CoA, promoting liberation of free luciferase, and increasing light yield, NTP reacts with the AMP moiety of the same complex, generating adenosine(5')tetraphospho(5')nucleoside (Ap(4)N) and, probably, the E.L complex and scarcely increasing light production, The results are discussed in relation to previous reports, by others, on luciferase. (C) 1997 Academic Press.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 6
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