4Y93:
reference: Autoinhibition of Bruton's tyrosine kinase (Btk) and activation by soluble inositol hexakisphosphate., Wang Q, Vogan EM, Nocka LM, Rosen CE, Zorn JA, Harrison SC, Kuriyan J, Elife. 2015 Feb 20;4. doi: 10.7554/eLife.06074. PMID: 25699547

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