1INO:
reference: Mg2+ activation of Escherichia coli inorganic pyrophosphatase., Avaeva SM, Rodina EV, Kurilova SA, Nazarova TI, Vorobyeva NN, Harutyunyan EH, Oganessyan VYu, FEBS Lett. 1995 Dec 11;377(1):44-6. PMID: 8543015

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