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Title: A coiled-coil- and C2-domain-containing protein is required for FAZ assembly and cell morphology in Trypanosoma brucei
Authors: Zhou, Q. 
Liu, B.
Sun, Y.
He, C.Y. 
Keywords: Basal bodies
Bi-lobed structure
Cell morphology
Flagellum attachment zone (FAZ)
Trypanosoma brucei
Issue Date: 15-Nov-2011
Citation: Zhou, Q., Liu, B., Sun, Y., He, C.Y. (2011-11-15). A coiled-coil- and C2-domain-containing protein is required for FAZ assembly and cell morphology in Trypanosoma brucei. Journal of Cell Science 124 (22) : 3848-3858. ScholarBank@NUS Repository.
Abstract: Trypanosoma brucei, a flagellated protozoan parasite causing human sleeping sickness, relies on a subpellicular microtubule array for maintenance of cell morphology. The flagellum is attached to the cell body through a poorly understood flagellum attachment zone (FAZ), and regulates cell morphogenesis using an unknown mechanism. Here we identified a new FAZ component, CC2D, which contains coiled-coil motifs followed by a C-terminal C2 domain. T. brucei CC2D is present on the FAZ filament, FAZ-juxtaposed ER membrane and the basal bodies. Depletion of CC2D inhibits the assembly of a new FAZ filament, forming a FAZ stub with a relatively fixed size at the base of a detached, but otherwise normal, flagellum. Inhibition of new FAZ formation perturbs subpellicular microtubule organization and generates short daughter cells. The cell length shows a strong linear correlation with FAZ length, in both control cells and in cells with inhibited FAZ assembly. Together, our data support a direct function of FAZ assembly in determining new daughter cell length by regulating subpellicular microtubule synthesis. © 2011. Published by The Company of Biologists Ltd.
Source Title: Journal of Cell Science
ISSN: 00219533
DOI: 10.1242/jcs.087676
Appears in Collections:Staff Publications

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