6DD9:
reference: A conserved filamentous assembly underlies the structure of the meiotic chromosome axis., West AM, Rosenberg SC, Ur SN, Lehmer MK, Ye Q, Hagemann G, Caballero I, Uson I, MacQueen AJ, Herzog F, Corbett KD, Elife. 2019 Jan 18;8. pii: 40372. doi: 10.7554/eLife.40372. PMID: 30657449

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