Abstract
The discovery of Sfi1p as a novel binding partner for the Ca2+-binding protein centrin has provided new insight into the dynamic behavior of centrosomes. Sfi1 binds to multiple centrin molecules along a series of internal repeats, and the complex forms Ca2+-sensitive contractile fibers that function to reorient centrioles and alter centrosome structure.
MeSH terms
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Calcium / metabolism
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Calcium-Binding Proteins / metabolism*
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Cell Cycle Proteins / genetics*
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Cell Cycle Proteins / metabolism
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Centrosome / metabolism*
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Chromosomal Proteins, Non-Histone / metabolism*
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Contractile Proteins / metabolism
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Eukaryota / metabolism
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Interspersed Repetitive Sequences / genetics
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Models, Biological*
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Repressor Proteins / genetics*
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Repressor Proteins / metabolism
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Saccharomyces cerevisiae Proteins / genetics*
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Saccharomyces cerevisiae Proteins / metabolism
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Yeasts / metabolism*
Substances
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Calcium-Binding Proteins
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Cell Cycle Proteins
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Chromosomal Proteins, Non-Histone
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Contractile Proteins
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Repressor Proteins
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SFI1 protein, S cerevisiae
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Saccharomyces cerevisiae Proteins
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caltractin
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Calcium