Loss of tubulin deglutamylase CCP1 causes infantile-onset neurodegeneration.

Shashi, Vandana; Magiera, Maria M; Klein, Dennis; Zaki, Maha; Schoch, Kelly; Rudnik-Schöneborn, Sabine; Norman, Andrew; Lopes Abath Neto, Osorio; Dusl, Marina; Yuan, Xidi; Bartesaghi, Luca; De Marco, Patrizia; Alfares, Ahmed A; Marom, Ronit; Arold, Stefan T; Guzmán-Vega, Francisco J; Pena, Loren Dm; Smith, Edward C; Steinlin, Maja; Babiker, Mohamed Oe; ... (2018). Loss of tubulin deglutamylase CCP1 causes infantile-onset neurodegeneration. The EMBO Journal, 37(23) EMBO Press 10.15252/embj.2018100540

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A set of glutamylases and deglutamylases controls levels of tubulin polyglutamylation, a prominent post-translational modification of neuronal microtubules. Defective tubulin polyglutamylation was first linked to neurodegeneration in the () mouse, which lacks deglutamylase CCP1, displays massive cerebellar atrophy, and accumulates abnormally glutamylated tubulin in degenerating neurons. We found biallelic rare and damaging variants in the gene encoding CCP1 in 13 individuals with infantile-onset neurodegeneration and confirmed the absence of functional CCP1 along with dysregulated tubulin polyglutamylation. The human disease mainly affected the cerebellum, spinal motor neurons, and peripheral nerves. We also demonstrate previously unrecognized peripheral nerve and spinal motor neuron degeneration in mice, which thus recapitulated key features of the human disease. Our findings link human neurodegeneration to tubulin polyglutamylation, entailing this post-translational modification as a potential target for drug development for neurodegenerative disorders.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology
04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine

UniBE Contributor:

Steinlin, Maja, Rösler, Kai Michael


600 Technology > 610 Medicine & health




EMBO Press




Anette van Dorland

Date Deposited:

30 Jan 2019 16:16

Last Modified:

05 Dec 2022 15:24

Publisher DOI:


PubMed ID:


Uncontrolled Keywords:

cerebellum cytosolic carboxypeptidase 1 (CCP1/AGTPBP1/NNA1) motor neuron neurodegeneration tubulin polyglutamylation





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