4ZHS:
reference: Structural Insights into the Tetrameric State of Aspartate-beta-semialdehyde Dehydrogenases from Fungal Species., Li Q, Mu Z, Zhao R, Dahal G, Viola RE, Liu T, Jin Q, Cui S, Sci Rep. 2016 Feb 12;6:21067. doi: 10.1038/srep21067. PMID: 26869335

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