3HHV:
reference: The dimeric structure of Sulfolobus solfataricus thioredoxin A2 and the basis of its thermostability., Ruggiero A, Masullo M, Marasco D, Ruocco MR, Grimaldi P, Arcari P, Zagari A, Vitagliano L, Proteins. 2009 Dec;77(4):1004-8. PMID: 19768676

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