4AH6:
reference: Thermodynamic properties distinguish human mitochondrial aspartyl-tRNA synthetase from bacterial homolog with same 3D architecture., Neuenfeldt A, Lorber B, Ennifar E, Gaudry A, Sauter C, Sissler M, Florentz C, Nucleic Acids Res. 2012 Dec 28. PMID: 23275545

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