1XB6:
reference: Effects of a novel disulfide bond and engineered electrostatic interactions on the thermostability of azurin., Tigerstrom A, Schwarz F, Karlsson G, Okvist M, Alvarez-Rua C, Maeder D, Robb FT, Sjolin L, Biochemistry 2004 Oct 5;43(39):12563-74. PMID: 15449946

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