1N57:
reference: The 1.6-A crystal structure of the class of chaperones represented by Escherichia coli Hsp31 reveals a putative catalytic triad., Quigley PM, Korotkov K, Baneyx F, Hol WG, Proc Natl Acad Sci U S A 2003 Mar 18;100(6):3137-42. PMID: 12621151

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