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Acta Crystallogr Sect F Struct Biol Cryst Commun. 2013 Apr 1;69(Pt 4):342-5. doi: 10.1107/S1744309113003369. Epub 2013 Mar 28.

Structure of the hypothetical DUF1811-family protein GK0453 from Geobacillus kaustophilus HTA426.

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  • 1Department of Biophysics, National Institute of Mental Health and Neuro Sciences, Bangalore 560 029, India.


The crystal structure of a conserved hypothetical protein, GK0453, from Geobacillus kaustophilus has been determined to 2.2 Å resolution. The crystal belonged to space group P4(3)2(1)2, with unit-cell parameters a = b = 75.69, c = 64.18 Å. The structure was determined by the molecular-replacement method and was refined to a final R factor of 22.6% (R(free) = 26.3%). Based on structural homology, the GK0453 protein possesses two independent binding sites and hence it may simultaneously interact with two proteins or with a protein and a nucleic acid.


DUF1811; Geobacillus kaustophilus; helix–turn–helix motif; β-barrel domain

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