2QC7:
reference: Crystal structure and functional analysis of the protein disulfide isomerase-related protein ERp29., Barak NN, Neumann P, Sevvana M, Schutkowski M, Naumann K, Malesevic M, Reichardt H, Fischer G, Stubbs MT, Ferrari DM, J Mol Biol. 2009 Feb 6;385(5):1630-42. Epub 2008 Dec 3. PMID: 19084538

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