5LMJ:
reference: Camelid nanobodies used as crystallization chaperones for different constructs of PorM, a component of the type IX secretion system from Porphyromonas gingivalis., Duhoo Y, Roche J, Trinh TTN, Desmyter A, Gaubert A, Kellenberger C, Cambillau C, Roussel A, Leone P, Acta Crystallogr F Struct Biol Commun. 2017 May 1;73(Pt 5):286-293. doi:, 10.1107/S2053230X17005969. Epub 2017 Apr 26. PMID: 28471361

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