3VSC:
reference: Structural analysis of the substrate recognition mechanism in O-phosphoserine sulfhydrylase from the hyperthermophilic archaeon Aeropyrum pernix K1., Nakamura T, Kawai Y, Kunimoto K, Iwasaki Y, Nishii K, Kataoka M, Ishikawa K, J Mol Biol. 2012 Sep 7;422(1):33-44. Epub 2012 May 11. PMID: 22580223

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