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Crystal structure of the Rasputin NTF2-like domain from Drosophila melanogaster.

Biochemical and biophysical research communications (2012-03-15)
Tina Vognsen, Ole Kristensen
ABSTRACT

The crystal structure of the NTF2-like domain of the Drosophila homolog of Ras GTPase SH3 Binding Protein (G3BP), Rasputin, was determined at 2.7Å resolution. The overall structure is highly similar to nuclear transport factor 2: It is a homodimer comprised of a β-sheet and three α-helices forming a cone-like shape. However, known binding sites for RanGDP and FxFG containing peptides show electrostatic and steric differences compared to nuclear transport factor 2. A HEPES molecule bound in the structure suggests a new, and possibly physiologically relevant, ligand binding site.

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