4FGF:
reference: Refinement of the structure of human basic fibroblast growth factor at 1.6 A resolution and analysis of presumed heparin binding sites by selenate substitution., Eriksson AE, Cousens LS, Matthews BW, Protein Sci 1993 Aug;2(8):1274-84. PMID: 7691311

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