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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Chemiluminescence of the Mn2(+)-activated ribulose-1,5-bisphosphate oxygenase reaction: evidence for singlet oxygen production.

Chemiluminescence has been observed during catalysis by Mn2(+)-activated ribulose-bisphosphate carboxylase/oxygenase from spinach. The luminescence is ribulose 1,5-bisphosphate (RuBP) and O2-dependent and is inhibited by 2-carboxyarabinitol 1,5-bisphosphate and high concentrations of bicarbonate; it is therefore ascribed to the RuBP oxygenase activity. The luminescence is inhibited by azide and enhanced in D2O and in the presence of diazabicyclooctane. The emission maximum is between 620 and 660 nm. The initial rate of light emission is second order in enzyme concentration. The data strongly suggest that singlet oxygen is produced during turnover, that the observed chemiluminescence is due to dimol emission of singlet oxygen, and that this provides a basis for a highly sensitive assay for RuBP oxygenase.[1]

References

  1. Chemiluminescence of the Mn2(+)-activated ribulose-1,5-bisphosphate oxygenase reaction: evidence for singlet oxygen production. Mogel, S.N., McFadden, B.A. Biochemistry (1990) [Pubmed]
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