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Bacterial microcompartments (BMCs) are complex macromolecular assemblies composed of any outer protein shell that encases a specific metabolic pathway cargo. Recent research is now starting to unravel some of the processes that are involved in directing the enzyme cargo to the inside of the BMC. In particular, an article in this issue of J Bacteriol by N. W. Kennedy, C. E. Mills, C. H. Abrahamson, A. Archer, et al. (J Bacteriol 204:e00576-21, 2022, https://doi.org/10.1128/jb.00576-21) highlights the role played by the shell protein PduB in coordinating this internalization process. |
