6B6U:
reference: Structural Investigation of a Dimeric Variant of Pyruvate Kinase Muscle Isoform 2., Srivastava D, Razzaghi M, Henzl MT, Dey M, Biochemistry. 2017 Dec 19;56(50):6517-6520. doi: 10.1021/acs.biochem.7b01013., Epub 2017 Dec 1. PMID: 29182273

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