5BU3:
reference: Enzyme-Dependent [4 + 2] Cycloaddition Depends on Lid-like Interaction of the N-Terminal Sequence with the Catalytic Core in PyrI4., Zheng Q, Guo Y, Yang L, Zhao Z, Wu Z, Zhang H, Liu J, Cheng X, Wu J, Yang H, Jiang H, Pan L, Liu W, Cell Chem Biol. 2016 Feb 8. pii: S2451-9456(16)30006-X. doi:, 10.1016/j.chembiol.2016.01.005. PMID: 26877021

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