1SXI:
reference: Structural basis for allosteric control of the transcription regulator CcpA by the phosphoprotein HPr-Ser46-P., Schumacher MA, Allen GS, Diel M, Seidel G, Hillen W, Brennan RG, Cell 2004 Sep 17;118(6):731-41. PMID: 15369672

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