4RF8:
reference: Structure of a double-domain phosphagen kinase reveals an asymmetric arrangement of the tandem domains., Wang Z, Qiao Z, Ye S, Zhang R, Acta Crystallogr D Biol Crystallogr. 2015 Apr;71(Pt 4):779-89. doi:, 10.1107/S1399004715001169. Epub 2015 Mar 26. PMID: 25849389

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