1MSP:
reference: 2.5 A resolution crystal structure of the motile major sperm protein (MSP) of Ascaris suum., Bullock TL, Roberts TM, Stewart M, J Mol Biol 1996 Oct 25;263(2):284-96. PMID: 8913307

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