Abstract
1. 1. Filtration of a bacterial lysate over Sephadex G-25 results in either a total or partial inactivation of the luciferase.
2. 2. The filtrate contains a non-protein fraction that stimulates the light reaction in vitro, evoked by addition of FMNH2 to a diluted, palmital-containing, luciferase preparation. Besides, a fraction inhibiting
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