2FNW:
reference: Excited-state dynamics of structurally characterized [ReI(CO)3(phen)(HisX)]+ (X = 83, 109) Pseudomonas aeruginosa azurins in aqueous solution., Blanco-Rodriguez AM, Busby M, Gradinaru C, Crane BR, Di Bilio AJ, Matousek P, Towrie M, Leigh BS, Richards JH, Vlcek A Jr, Gray HB, J Am Chem Soc. 2006 Apr 5;128(13):4365-70. PMID: 16569013

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