6FA0:
reference: Orthorhombic lysozyme crystallization at acidic pH values driven by phosphate binding., Plaza-Garrido M, Salinas-Garcia MC, Camara-Artigas A, Acta Crystallogr D Struct Biol. 2018 May 1;74(Pt 5):480-489. doi:, 10.1107/S205979831800517X. Epub 2018 Apr 27. PMID: 29717719

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