4JNW:
reference: Titin kinase is an inactive pseudokinase scaffold that supports MuRF1 recruitment to the sarcomeric M-line., Bogomolovas J, Gasch A, Simkovic F, Rigden DJ, Labeit S, Mayans O, Open Biol. 2014 May;4(5):140041. doi: 10.1098/rsob.140041. PMID: 24850911

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