2RQS:
reference: Structure and Dynamics of the First Archaeal Parvulin Reveal a New Functionally Important Loop in Parvulin-type Prolyl Isomerases., Jaremko L, Jaremko M, Elfaki I, Mueller JW, Ejchart A, Bayer P, Zhukov I, J Biol Chem. 2011 Feb 25;286(8):6554-65. Epub 2010 Dec 7. PMID: 21138844

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