Bacterial Flagella: Polarity of Elongation

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Science  10 Jul 1970:
Vol. 169, Issue 3941, pp. 190-192
DOI: 10.1126/science.169.3941.190


Newly synthesized regions of Bacillus subtilis flagella were labeled with fluorophenylalanine or [3H]leucine. The flagella were then examined for altered gross morphology or by radioautography. Results of both experiments indicate that flagella elongate in vivo by polymerization of flagellin subunits onto the distal end of the filament.

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