2PFS:
reference: Structural and functional insight into the universal stress protein family., Tkaczuk KL, A Shumilin I, Chruszcz M, Evdokimova E, Savchenko A, Minor W, Evol Appl. 2013 Apr;6(3):434-49. doi: 10.1111/eva.12057. Epub 2013 Mar 13. PMID: 23745136

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