3KSY:
reference: Role of the histone domain in the autoinhibition and activation of the Ras activator Son of Sevenless., Gureasko J, Kuchment O, Makino DL, Sondermann H, Bar-Sagi D, Kuriyan J, Proc Natl Acad Sci U S A. 2010 Feb 4. PMID: 20133692

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