4YOP:
reference: Native sulfur/chlorine SAD phasing for serial femtosecond crystallography., Nakane T, Song C, Suzuki M, Nango E, Kobayashi J, Masuda T, Inoue S, Mizohata E, Nakatsu T, Tanaka T, Tanaka R, Shimamura T, Tono K, Joti Y, Kameshima T, Hatsui T, Yabashi M, Nureki O, Iwata S, Sugahara M, Acta Crystallogr D Biol Crystallogr. 2015 Dec 1;71(Pt 12):2519-25. doi:, 10.1107/S139900471501857X. Epub 2015 Nov 27. PMID: 26627659

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