Cerebellin 1 is abundant in the cerebellum, but its function remains a mystery. Hirai et al. now show that this gene is required to maintain parallel fiber-Purkinje cell synapses, via the orphan glutamate receptor subunit Grid2. These findings provide further evidence that there is a molecular pathway devoted to maintenance of synapses.
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Selimi, F., Heintz, N. How neurons keep in touch. Nat Neurosci 8, 1417–1418 (2005). https://doi.org/10.1038/nn1105-1417
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DOI: https://doi.org/10.1038/nn1105-1417