Bacterial actin and tubulin homologs in cell growth and division

Current Biology : CB
Kimberly K Busiek, William Margolin

Abstract

In contrast to the elaborate cytoskeletal machines harbored by eukaryotic cells, such as mitotic spindles, cytoskeletal structures detectable by typical negative stain electron microscopy are generally absent from bacterial cells. As a result, for decades it was thought that bacteria lacked cytoskeletal machines. Revolutions in genomics and fluorescence microscopy have confirmed the existence not only of smaller-scale cytoskeletal structures in bacteria, but also of widespread functional homologs of eukaryotic cytoskeletal proteins. The presence of actin, tubulin, and intermediate filament homologs in these relatively simple cells suggests that primitive cytoskeletons first arose in bacteria. In bacteria such as Escherichia coli, homologs of tubulin and actin directly interact with each other and are crucial for coordinating cell growth and division. The function and direct interactions between these proteins will be the focus of this review.

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Citations

Apr 5, 2016·Nature Reviews. Microbiology·Daniel P Haeusser, William Margolin
Jun 3, 2016·Analytical Biochemistry·Veronica M GarciaKevin A Morano
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