2V1Y:
reference: Mechanism of two classes of cancer mutations in the phosphoinositide 3-kinase catalytic subunit., Miled N, Yan Y, Hon WC, Perisic O, Zvelebil M, Inbar Y, Schneidman-Duhovny D, Wolfson HJ, Backer JM, Williams RL, Science. 2007 Jul 13;317(5835):239-42. PMID: 17626883

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