Elucidating structure of bacterial flagellar motor protein

Researchers used biochemical techniques and electron microscopy to uncover the structure of the bacterial MotA protein, which forms part of the propeller motor (flagellum). Three-dimensional analysis found it is composed of a transmembrane component and cytoplasmic domain, while MotA molecules were shown to form stable tetramer complexes with other MotA molecules. These findings will aid understanding of the mechanism underlying energy conversion during bacterial movement.

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