A bacterial cell-envelope assembly involved in oriented lateral peptidoglycan synthesis in many rod-shaped species.
Coordinating synthesis around the cell sidewall helps maintain an elongated geometry. This differs from the divisome, which constructs the new boundary at a division site. Defects in elongation and division can therefore produce different changes in cell shape. [ref]
Molecular Biology of the Cell, 4th edition by Bruce Alberts and others. Chapter 1, Prokaryotic cell organization and growth
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