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BIBTEX RIS

ATP-dependent bioluminescence in the firefly squid, Watasenia scintillans

1985; National Academy of Sciences; Volume: 82; Issue: 14 Linguagem: Inglês

10.1073/pnas.82.14.4629

ISSN

1091-6490

Autores

Frederick I. Tsuji,

Tópico(s)

Nicotinic Acetylcholine Receptors Study

Resumo

The Japanese firefly squid, Watasenia scintillans, emits intense flashes of light from three tiny luminous organs that are located at the tip of each of a pair of ventral arms. Light is also produced from hundreds of other minute organs that are scattered over the body. The luminescence is due to an ATP-dependent reaction, with an optimal pH of 8.80. The decay of light intensity follows first-order kinetics and the decay constant is independent of initial ATP concentration. The light emission also requires MgCl(2), a soluble component, and an insoluble component that is membrane bound. Squids represent a major group of organisms unrelated to fireflies in which ATP is required for bioluminescence.

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