Sandbox GGC3: Difference between revisions

An alternative mechanism involving the enantiomer of <small>D</small>-luciferin exists, though typically <small>L</small>-luciferin acts as a competitive inhibitor to the bioluminescence-producing reaction<ref name=“Seliger”>Seliger, H. H., McElroy, W. D., White, E. H., & Field, G. F. (1961). Stereospecificity and firefly bioluminescence, a comparison of natural and synthetic luciferins. ‘’Proceedings of the National Academy of Sciences of the United States of America 47’’(8), 1129-1134. https://doi.org/10.1073/pnas.47.8.1129</ref>, though accounts of light production in small quantities have previously been reported<ref name=“Lembert”>Lembert, N. (1996). Firefly luciferase can use L-luciferin to produce light. ‘’Biochemical Journal 317’’(1), 273-277. https://doi.org/10.1042/bj3170273</ref>. The mechanism by which L-luciferin acts as the substrate in the presence of luciferase (and ATP and Mg²⁺) is the same in the first partial reaction, with both producing the intermediate luciferyl-adenylate. Rather than the oxidative decarboxylation step, the adenyl group (AMP) is substituted with CoA-SH yielding luciferyl-CoA. Furthermore, the stereospecificity of luciferase has shown that even in the presence of CoA-SH, <small>D</small>-luciferin was not converted into luciferyl-CoA but proceeded in being used for the emittance of light<ref name="Nakamura"/>.