1AJB:
reference: 3-D structure of the D153G mutant of Escherichia coli alkaline phosphatase: an enzyme with weaker magnesium binding and increased catalytic activity., Dealwis CG, Chen L, Brennan C, Mandecki W, Abad-Zapatero C, Protein Eng 1995 Sep;8(9):865-71. PMID: 8746724

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