1K6M:
reference: Tissue-specific structure/function differentiation of the liver isoform of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase., Lee YH, Li Y, Uyeda K, Hasemann CA, J Biol Chem 2003 Jan 3;278(1):523-30. PMID: 12379646

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