1ROW:
reference: Structure of sperm-specific protein SSP-19 from Caenorhabditis elegans., Schormann N, Symersky J, Luo M, Acta Crystallogr D Biol Crystallogr. 2004 Oct;60(Pt 10):1840-5. Epub 2004, Sep 23. PMID: 15388931

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