5K31:
reference: Structural basis of homo- and heterotrimerization of collagen I., Sharma U, Carrique L, Vadon-Le Goff S, Mariano N, Georges RN, Delolme F, Koivunen P, Myllyharju J, Moali C, Aghajari N, Hulmes DJ, Nat Commun. 2017 Mar 10;8:14671. doi: 10.1038/ncomms14671. PMID: 28281531

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