Bacterial Microcompartment Organelles: Protein Shell Structure and Evolution
- 1 April 2010
- journal article
- review article
- Published by Annual Reviews in Annual Review of Biophysics
- Vol. 39 (1), 185-205
- https://doi.org/10.1146/annurev.biophys.093008.131418
Abstract
Some bacteria contain organelles or microcompartments consisting of a large virion-like protein shell encapsulating sequentially acting enzymes. These organized microcompartments serve to enhance or protect key metabolic pathways inside the cell. The variety of bacterial microcompartments provide diverse metabolic functions, ranging from CO2 fixation to the degradation of small organic molecules. Yet they share an evolutionarily related shell, which is defined by a conserved protein domain that is widely distributed across the bacterial kingdom. Structural studies on a number of these bacterial microcompartment shell proteins are illuminating the architecture of the shell and highlighting its critical role in controlling molecular transport into and out of microcompartments. Current structural, evolutionary, and mechanistic ideas are discussed, along with genomic studies for exploring the function and diversity of this family of bacterial organelles.Keywords
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