4XIU:
reference: A Conservative Isoleucine to Leucine Mutation Causes Major Rearrangements and Cold Sensitivity in KlenTaq1 DNA Polymerase., Wu EY, Walsh AR, Materne EC, Hiltner EP, Zielinski B, Miller BR 3rd, Mawby L, Modeste E, Parish CA, Barnes WM, Kermekchiev MB, Biochemistry. 2015 Jan 9. PMID: 25537790

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