6LE4:
reference: Catalytic specificity of the Lactobacillus plantarum cystathionine gamma-lyase presumed by the crystallographic analysis., Matoba Y, Noda M, Yoshida T, Oda K, Ezumi Y, Yasutake C, Izuhara-Kihara H, Danshiitsoodol N, Kumagai T, Sugiyama M, Sci Rep. 2020 Sep 10;10(1):14886. doi: 10.1038/s41598-020-71756-7. PMID: 32913258

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