Structure of GlgS from Escherichia coli suggests a role in protein-protein interactions

Abstract

Background: The Escherichia coli protein GlgS is up-regulated in response to starvation stress and its overexpression was shown to stimulate glycogen synthesis. Results: We solved the structure of GlgS from E. coli, a member of an enterobacterial protein family. The protein structure represents a bundle of three α-helices with a short hydrophobic helix sandwiched between two long amphipathic helices. Conclusion: GlgS shows structural homology to Huntingtin, elongation factor 3, protein phosphatase 2A, TOR1 motif domains and tetratricopeptide repeats, suggesting a possible role in protein-protein interactions. © 2004 Kozlov et al; licensee BioMed Central Ltd.