CEP41 is mutated in Joubert syndrome and is required for tubulin glutamylation at the cilium.

CEP41 is mutated in Joubert syndrome and is required for tubulin glutamylation at the cilium.
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DOI:
10.1038/ng.1078
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发表时间:
2012-01-15
期刊:
影响因子:
30.8
通讯作者:
Gleeson, Joseph G.
Gleeson, Joseph G.
中科院分区:
生物学1区
文献类型:
--
作者:
Lee, Ji Eun;Silhavy, Jennifer L.;Zaki, Maha S.;Schroth, Jana;Bielas, Stephanie L.;Marsh, Sarah E.;Olvera, Jesus;Brancati, Francesco;Iannicelli, Miriam;Ikegami, Koji;Schlossman, Andrew M.;Merriman, Barry;Attie-Bitach, Tania;Logan, Clare V.;Glass, Ian A.;Cluckey, Andrew;Louie, Carrie M.;Lee, Jeong Ho;Raynes, Hilary R.;Rapin, Isabelle;Castroviejo, Ignacio P.;Setou, Mitsutoshi;Barbot, Clara;Boltshauser, Eugen;Nelson, Stanley F.;Hildebrandt, Friedhelm;Johnson, Colin A.;Doherty, Daniel A.;Valente, Enza Maria;Gleeson, Joseph G.

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Tubulin glutamylation is a post-translational modification (PTM) occurring predominantly on ciliary axonemal tubulin and has been suggested to be important for ciliary function . However, its relationship to disorders of the primary cilium, termed ‘ciliopathies’, has not been explored. Here, in Joubert syndrome (JBTS) , we identify the JBTS15 locus and the responsible gene as CEP41, encoding a centrosomal protein of 41 KDa . We show that CEP41 is localized to the basal body/primary cilium, and regulates the ciliary entry of TTLL6, an evolutionarily conserved polyglutamylase enzyme . Depletion of CEP41 causes ciliopathy-related phenotypes in zebrafish and mouse, and induces cilia axonemal glutamylation defects. Our data identify loss of CEP41 as a cause of JBTS ciliopathy and highlight involvement of tubulin PTM in pathogenesis of the ciliopathy spectrum.
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