4LWL:
reference: Structural analysis of 1-Cys type selenoprotein methionine sulfoxide reductase A., Lee EH, Kwak GH, Kim MJ, Kim HY, Hwang KY, Arch Biochem Biophys. 2014 Mar 1;545:1-8. doi: 10.1016/j.abb.2013.12.024. Epub, 2014 Jan 8. PMID: 24412203

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