1VRV:
reference: Visualization of the phosphorylated active site loop of the cytoplasmic B domain of the mannitol transporter II(Mannitol) of the Escherichia coli phosphotransferase system by NMR spectroscopy and residual dipolar couplings., Suh JY, Tang C, Cai M, Clore GM, J Mol Biol 2005 Nov 11;353(5):1129-36. Epub 2005 Sep 28. PMID: 16219324

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