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The metabolism of histamine in the Drosophila optic lobe involves an ommatidial pathway: beta-alanine recycles through the retina

Borycz, J.; Borycz, J. A.; Edwards, T. N.; Boulianne, G. L.; Meinertzhagen, I. A. (2012-04)

Flies recycle the photoreceptor neurotransmitter histamine by conjugating it to beta-alanine to form beta-alanyl-histamine (carcinine). The conjugation is regulated by Ebony, while Tan hydrolyses carcinine, releasing ...