Trypanin is a cytoskeletal linker protein and is required for cell motility in African trypanosomes.
Trypanin is a cytoskeletal linker protein and is required for cell motility in African trypanosomes.
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DOI:
10.1083/jcb.200201036
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发表时间:
2002-03-04
期刊:
影响因子:
--
通讯作者:
Hill KL
中科院分区:
文献类型:
--
作者:
Hutchings NR;Donelson JE;Hill KL
The cytoskeleton of eukaryotic cells is comprised of a complex network of distinct but interconnected filament systems that function in cell division, cell motility, and subcellular trafficking of proteins and organelles. A gap in our understanding of this dynamic network is the identification of proteins that connect subsets of cytoskeletal structures. We previously discovered a family of cytoskeleton-associated proteins that includes GAS11, a candidate human tumor suppressor upregulated in growth-arrested cells, and trypanin, a component of the flagellar cytoskeleton of African trypanosomes. Although these proteins are intimately associated with the cytoskeleton, their function has yet to be determined. Here we use double-stranded RNA interference to block trypanin expression in Trypanosoma brucei, and demonstrate that this protein is required for directional cell motility. Trypanin(−) mutants have an active flagellum, but are unable to coordinate flagellar beat. As a consequence, they spin and tumble uncontrollably, occasionally moving backward. Immunofluorescence experiments demonstrate that trypanin is located along the flagellum/flagellum attachment zone and electron microscopic analysis revealed that cytoskeletal connections between the flagellar apparatus and subpellicular cytoskeleton are destabilized in trypanin(−) mutants. These results indicate that trypanin functions as a cytoskeletal linker protein and offer insights into the mechanisms of flagellum-based cell motility.
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DOI:
10.1083/jcb.122.1.149
发表时间:
1993-07
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cooper R;de Jesus AR;Cross GA
通讯作者:
Cross GA
影响因子:
3.5
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DOI:
10.1098/rstb.1989.0037
发表时间:
1989-06-12
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6.3
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GULL, K
DOI:
10.1073/pnas.95.25.14687
发表时间:
1998-12-08
影响因子:
11.1
作者:
Ngô, H;Tschudi, C;Ullu, E
通讯作者:
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影响因子:
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通讯作者:
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