1EFC:
reference: Crystal structure of intact elongation factor EF-Tu from Escherichia coli in GDP conformation at 2.05 A resolution., Song H, Parsons MR, Rowsell S, Leonard G, Phillips SE, J Mol Biol 1999 Jan 22;285(3):1245-56. PMID: 9918724

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