3TCO:
reference: Crystallographic and spectroscopic characterizations of Sulfolobus solfataricus TrxA1 provide insights into the determinants of thioredoxin fold stability., Esposito L, Ruggiero A, Masullo M, Ruocco MR, Lamberti A, Arcari P, Zagari A, Vitagliano L, J Struct Biol. 2011 Nov 7. PMID: 22085748

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