Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Human TUBB3 mutations perturb microtubule dynamics, kinesin interactions, and axon guidance.
Cell 140, 74-87 (2010)
We report that eight heterozygous missense mutations in TUBB3, encoding the neuron-specific beta-tubulin isotype III, result in a spectrum of human nervous system disorders that we now call the TUBB3 syndromes. Each mutation causes the ocular motility disorder CFEOM3, whereas some also result in intellectual and behavioral impairments, facial paralysis, and/or later-onset axonal sensorimotor polyneuropathy. Neuroimaging reveals a spectrum of abnormalities including hypoplasia of oculomotor nerves and dysgenesis of the corpus callosum, anterior commissure, and corticospinal tracts. A knock-in disease mouse model reveals axon guidance defects without evidence of cortical cell migration abnormalities. We show that the disease-associated mutations can impair tubulin heterodimer formation in vitro, although folded mutant heterodimers can still polymerize into microtubules. Modeling each mutation in yeast tubulin demonstrates that all alter dynamic instability whereas a subset disrupts the interaction of microtubules with kinesin motors. These findings demonstrate that normal TUBB3 is required for axon guidance and maintenance in mammals.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Times Cited
Scopus
Cited By
Cited By
Altmetric
31.152
9.120
244
387
Anmerkungen
Besondere Publikation
Auf Hompepage verbergern
Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Beta-tubulin gene; Congential fibrosis; Extraocular-muscles; Mitotic spindle; Alpha-tubulin; In-vitro; Isotype; KIF21A; Yeast; Identification
Sprache
englisch
Veröffentlichungsjahr
2010
HGF-Berichtsjahr
2010
ISSN (print) / ISBN
0092-8674
e-ISSN
1097-4172
Zeitschrift
Cell
Quellenangaben
Band: 140,
Heft: 1,
Seiten: 74-87
Verlag
Cell Press
Verlagsort
Cambridge, Mass.
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Human Genetics (IHG)
POF Topic(s)
30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-500700-001
PubMed ID
20074521
Scopus ID
73349096922
Erfassungsdatum
2010-06-10