2Q7A:
reference: Bis-methionyl coordination in the crystal structure of the heme-binding domain of the streptococcal cell surface protein Shp., Aranda R 4th, Worley CE, Liu M, Bitto E, Cates MS, Olson JS, Lei B, Phillips GN Jr, J Mol Biol. 2007 Nov 23;374(2):374-83. Epub 2007 Aug 31. PMID: 17920629

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