2HKP:
reference: Molecular basis of the redox regulation of SUMO proteases: a protective mechanism of intermolecular disulfide linkage against irreversible sulfhydryl oxidation., Xu Z, Lam LS, Lam LH, Chau SF, Ng TB, Au SW, FASEB J. 2008 Jan;22(1):127-37. Epub 2007 Aug 17. PMID: 17704192

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