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The Ubiquitinated Axon: Local Control of Axon Development and Function by Ubiquitin

Maria J. Pinto, Diogo Tomé and Ramiro D. Almeida
Journal of Neuroscience 31 March 2021, 41 (13) 2796-2813; DOI: https://doi.org/10.1523/JNEUROSCI.2251-20.2021
Maria J. Pinto
1Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, 3004-504, Portugal
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Diogo Tomé
1Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, 3004-504, Portugal
2Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, 3810-193, Portugal
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Ramiro D. Almeida
1Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, 3004-504, Portugal
2Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, 3810-193, Portugal
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Abstract

Ubiquitin tagging sets protein fate. With a wide range of possible patterns and reversibility, ubiquitination can assume many shapes to meet specific demands of a particular cell across time and space. In neurons, unique cells with functionally distinct axons and dendrites harboring dynamic synapses, the ubiquitin code is exploited at the height of its power. Indeed, wide expression of ubiquitination and proteasome machinery at synapses, a diverse brain ubiquitome, and the existence of ubiquitin-related neurodevelopmental diseases support a fundamental role of ubiquitin signaling in the developing and mature brain. While special attention has been given to dendritic ubiquitin-dependent control, how axonal biology is governed by this small but versatile molecule has been considerably less discussed. Herein, we set out to explore the ubiquitin-mediated spatiotemporal control of an axon's lifetime: from its differentiation and growth through presynaptic formation, function, and pruning.

  • axons
  • presynaptic terminal
  • ubiquitin
  • ubiquitin-proteasome system
  • neuronal disorders

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The Journal of Neuroscience: 41 (13)
Journal of Neuroscience
Vol. 41, Issue 13
31 Mar 2021
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The Ubiquitinated Axon: Local Control of Axon Development and Function by Ubiquitin
Maria J. Pinto, Diogo Tomé, Ramiro D. Almeida
Journal of Neuroscience 31 March 2021, 41 (13) 2796-2813; DOI: 10.1523/JNEUROSCI.2251-20.2021

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The Ubiquitinated Axon: Local Control of Axon Development and Function by Ubiquitin
Maria J. Pinto, Diogo Tomé, Ramiro D. Almeida
Journal of Neuroscience 31 March 2021, 41 (13) 2796-2813; DOI: 10.1523/JNEUROSCI.2251-20.2021
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Keywords

  • axons
  • presynaptic terminal
  • ubiquitin
  • ubiquitin-proteasome system
  • neuronal disorders

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