2KZ2:
reference: Design of a switchable eliminase., Korendovych IV, Kulp DW, Wu Y, Cheng H, Roder H, DeGrado WF, Proc Natl Acad Sci U S A. 2011 Apr 26;108(17):6823-7. Epub 2011 Apr 11. PMID: 21482808

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