3i6p
From Proteopedia
Ethanolamine Utilization Microcompartment Shell Subunit, EutM
Structural highlights
Function[EUTM_ECOLI] May be involved in the formation of a specific microcompartment in the cell in which the metabolism of potentially toxic by-products takes place. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedMany bacterial cells contain proteinaceous microcompartments that act as simple organelles by sequestering specific metabolic processes involving volatile or toxic metabolites. Here we report the three-dimensional (3D) crystal structures, with resolutions between 1.65 and 2.5 angstroms, of the four homologous proteins (EutS, EutL, EutK, and EutM) that are thought to be the major shell constituents of a functionally complex ethanolamine utilization (Eut) microcompartment. The Eut microcompartment is used to sequester the metabolism of ethanolamine in bacteria such as Escherichia coli and Salmonella enterica. The four Eut shell proteins share an overall similar 3D fold, but they have distinguishing structural features that help explain the specific roles they play in the microcompartment. For example, EutL undergoes a conformational change that is probably involved in gating molecular transport through shell protein pores, whereas structural evidence suggests that EutK might bind a nucleic acid component. Together these structures give mechanistic insight into bacterial microcompartments. Structure and mechanisms of a protein-based organelle in Escherichia coli.,Tanaka S, Sawaya MR, Yeates TO Science. 2010 Jan 1;327(5961):81-4. PMID:20044574[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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