1GRW:
reference: 2.6 A resolution crystal structure of helices of the motile major sperm protein (MSP) of Caenorhabditis elegans., Baker AM, Roberts TM, Stewart M, J Mol Biol 2002 May 31;319(2):491-9. PMID: 12051923

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