1FBT:
reference: Crystal structure of the rat liver fructose-2,6-bisphosphatase based on selenomethionine multiwavelength anomalous dispersion phases., Lee YH, Ogata C, Pflugrath JW, Levitt DG, Sarma R, Banaszak LJ, Pilkis SJ, Biochemistry 1996 May 14;35(19):6010-9. PMID: 8634242

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