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  • Title: Ethanolamine accumulation by photoreceptor cells of the rabbit retina.
    Author: Pu GA, Anderson RE.
    Journal: J Neurochem; 1984 Jan; 42(1):185-91. PubMed ID: 6315885.
    Abstract:
    The rabbit retina accumulates ethanolamine by an overall process that has a high affinity for ethanolamine. This process is different from the choline uptake, since ethanolamine accumulation was unaffected by high choline concentrations. Autoradiography identified the major site of high-affinity uptake as the perinuclear region of the photoreceptor cells. Ethanolamine accumulated by the high-affinity uptake was not used for neurotransmission by photoreceptor cells but was used to synthesize phosphatidylethanolamine. However, only a small percentage of the accumulated ethanolamine was converted into phospholipid. The rate of phosphorylation may contribute to control of phospholipid synthesis, since choline kinase activity is much greater than ethanolamine kinase activity in the rabbit retina.
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