2AXW:
reference: Structure of DraD invasin from uropathogenic Escherichia coli: a dimer with swapped beta-tails., Jedrzejczak R, Dauter Z, Dauter M, Piatek R, Zalewska B, Mroz M, Bury K, Nowicki B, Kur J, Acta Crystallogr D Biol Crystallogr. 2006 Mar;62(Pt 2):157-64. Epub 2006, Jan 18. PMID: 16421447

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