2XZW:
reference: Mechanism of 2-oxoglutarate signaling by the Synechococcus elongatus PII signal transduction protein., Fokina O, Chellamuthu VR, Forchhammer K, Zeth K, Proc Natl Acad Sci U S A. 2010 Nov 1. PMID: 21041661

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