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The analysis of individuals with ciliary chondrodysplasias can shed light on sensitive mechanisms controlling ciliogenesis and cell signalling that are essential to embryonic development and survival. Here we identify TCTEX1D2 mutations causing Jeune asphyxiating thoracic dystrophy with partially penetrant inheritance. Loss of TCTEX1D2 impairs retrograde intraflagellar transport (IFT) in humans and the protist Chlamydomonas, accompanied by destabilization of the retrograde IFT dynein motor. We thus define TCTEX1D2 as an integral component of the evolutionarily conserved retrograde IFT machinery. In complex with several IFT dynein light chains, it is required for correct vertebrate skeletal formation but may be functionally redundant under certain conditions.

Original publication

DOI

10.1038/ncomms8074

Type

Journal article

Journal

Nat Commun

Publication Date

05/06/2015

Volume

6

Keywords

Animals, Chlamydomonas reinhardtii, Dyneins, Ellis-Van Creveld Syndrome, Flagella, Gene Knockdown Techniques, HEK293 Cells, Humans, Mice, Mutation, Penetrance, Zebrafish