Sequential polymerization of flagellin A and flagellin B into Caulobacter flagella |
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Authors: | Shigeo Koyasu Makoto Asada Akio Fukuda Yoshimi Okada |
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Institution: | Department of Biophysics and Biochemistry Faculty of Sciences, University of Tokyo Hongo, Tokyo 113 Japan |
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Abstract: | The mode of polymerization of two species of flagellins, flagellin A and flagellin B, in polar flagella of Caulobacter crescentus was examined. By immunological staining we found that 1 to 1.2 μm of the portion of the flagellar filament proximal to the cell was composed of flagellin B, whereas about 5 μm of the distal portion was composed of flagellin A. This result, together with the previous observation that a flagellin B-less mutant cannot form normal flagella but instead forms stubs in spite of their high level of flagellin A synthesis, indicates that flagellin B is very important for the formation of complete flagella and/or for the initiation of filament formation from the hook. |
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Keywords: | Author to whom correspondence should be addressed |
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