Journal
MICROTUBULES AND CENTROSOMES
Volume 62, Issue 6, Pages 753-763Publisher
PORTLAND PRESS LTD
DOI: 10.1042/EBC20180030
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Funding
- Novo Nordisk Foundation [NNF15OC0014164]
- National Institutes of Health [R01GM110413]
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM110413] Funding Source: NIH RePORTER
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Bardet-Biedl syndrome (BBS) is a rare inherited disease caused by defects in the BBSome, an octameric complex of BBS proteins. The BBSome is conserved in most organisms with cilia, which are microtubule (MT)-based cell organelles that protrude from the cell surface and function in motility and sensing. Cilia assembly, maintenance, and function require intraflagellar transport (IFT), a bidirectional motility ofmulti-megadalton IFT trains propelled by molecular motors along the ciliary MTs. IFT has been shown to transport structural proteins, including tubulin, into growing cilia. The BBSome is an adapter for the transport of ciliary membrane proteins and cycles through cilia via IFT. While both the loss and the abnormal accumulation of ciliary membrane proteins have been observed in bbs mutants, recent data converge on amodel where the BBSomemainly functions as a cargo adapter for the removal of certain transmembrane and peripheral membrane proteins from cilia. Here, we review recent data on the ultrastructure of the BBSome and how the BBSome recognizes its cargoes and mediates their removal from cilia.
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