6ago is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
↑ An S, Yeo KJ, Jeon YH, Song JJ. Crystal structure of the human histone methyltransferase ASH1L catalytic domain and its implications for the regulatory mechanism. J Biol Chem. 2011 Mar 11;286(10):8369-74. Epub 2011 Jan 14. PMID:21239497 doi:10.1074/jbc.M110.203380