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• W2952488211 endingPage "e1006815" @default.
• W2952488211 startingPage "e1006815" @default.
• W2952488211 abstract "Sleep is an ancient animal behavior that is regulated similarly in species ranging from flies to humans. Various genes that regulate sleep have been identified in invertebrates, but whether the functions of these genes are conserved in mammals remains poorly explored. Drosophila insomniac (inc) mutants exhibit severely shortened and fragmented sleep. Inc protein physically associates with the Cullin-3 (Cul3) ubiquitin ligase, and neuronal depletion of Inc or Cul3 strongly curtails sleep, suggesting that Inc is a Cul3 adaptor that directs the ubiquitination of neuronal substrates that impact sleep. Three proteins similar to Inc exist in vertebrates-KCTD2, KCTD5, and KCTD17-but are uncharacterized within the nervous system and their functional conservation with Inc has not been addressed. Here we show that Inc and its mouse orthologs exhibit striking biochemical and functional interchangeability within Cul3 complexes. Remarkably, KCTD2 and KCTD5 restore sleep to inc mutants, indicating that they can substitute for Inc in vivo and engage its neuronal targets relevant to sleep. Inc and its orthologs localize similarly within fly and mammalian neurons and can traffic to synapses, suggesting that their substrates may include synaptic proteins. Consistent with such a mechanism, inc mutants exhibit defects in synaptic structure and physiology, indicating that Inc is essential for both sleep and synaptic function. Our findings reveal that molecular functions of Inc are conserved through ~600 million years of evolution and support the hypothesis that Inc and its orthologs participate in an evolutionarily conserved ubiquitination pathway that links synaptic function and sleep regulation." @default.
• W2952488211 created "2019-06-27" @default.
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• W2952488211 date "2017-05-30" @default.
• W2952488211 modified "2023-10-10" @default.
• W2952488211 title "Conserved properties of Drosophila Insomniac link sleep regulation and synaptic function" @default.
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• W2952488211 doi "https://doi.org/10.1371/journal.pgen.1006815" @default.
• W2952488211 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5469494" @default.
• W2952488211 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28558011" @default.
• W2952488211 hasPublicationYear "2017" @default.
• W2952488211 type Work @default.
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