2HF8:
reference: Structural insights into HypB, a GTP-binding protein that regulates metal binding., Gasper R, Scrima A, Wittinghofer A, J Biol Chem. 2006 Sep 15;281(37):27492-502. Epub 2006 Jun 28. PMID: 16807243

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).