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. 2011 Jul 28;6(7):e22767. doi: 10.1371/journal.pone.0022767

Figure 7. Lys171 in SPAP, a substitute for third metal: Superposition of SPAP (magenta) and ECAP (cyan).

Figure 7

(A) amino acid substitutions that abolish Mg2+ binding site in SPAP. (B) Comparision of interactions of Mg2+ (ECAP) and Lys171 (SPAP) with substrate phosphate and active site aspartate.