1UMJ:
reference: Structural evidence for guanidine-protein side chain interactions: crystal structure of CutA from Pyrococcus horikoshii in 3M guanidine hydrochloride., Tanaka Y, Tsumoto K, Umetsu M, Nakanishi T, Yasutake Y, Sakai N, Yao M, Tanaka I, Arakawa T, Kumagai I, Biochem Biophys Res Commun 2004 Oct 8;323(1):185-91. PMID: 15351719

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