242D:
reference: MAD Phasing Strategies Explored with a Brominated Oligonucleotide Crystal at 1.65A Resolution., Peterson MR, Harrop SJ, McSweeney SM, Leonard GA, Thompson AW, Hunter WN, Helliwell JR, J Synchrotron Radiat. 1996 Jan 1;3(Pt 1):24-34. PMID: 16702655

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