4ZG0:
reference: Crystal structure of syndesmos and its interaction with Syndecan-4 proteoglycan., Kim H, Yoo J, Lee I, Kang YJ, Cho HS, Lee W, Biochem Biophys Res Commun. 2015 Aug 7;463(4):762-7. doi:, 10.1016/j.bbrc.2015.06.010. Epub 2015 Jun 19. PMID: 26100207

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