Produces green light with a wavelength of 570 nm. ATP + firefly D-luciferin + O2 = AMP + CO2 + diphosphate + firefly oxyluciferin + hnu Inhibited by ATP analogs and sodium deoxycholate. Activated by choline-containing phospholipids. Optimum pH is 7.7. Homodimer. Belongs to the ATP-dependent AMP-binding enzyme family.