6G4G:
reference: Crystallization of ectonucleotide phosphodiesterase/pyrophosphatase-3 and orientation of the SMB domains in the full-length ectodomain., Dohler C, Zebisch M, Krinke D, Robitzki A, Strater N, Acta Crystallogr F Struct Biol Commun. 2018 Nov 1;74(Pt 11):696-703. doi:, 10.1107/S2053230X18011111. Epub 2018 Oct 16. PMID: 30387774

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