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Figure 4.
Figure 4 Metal-ion coordination. (a) Zn^2+ is coordinated to
His65A ND1, His87A NE2, His82B NE2, HOH44 and Tyr159B OH. The OH
is at a distance of 2.71 Å from Zn^2+. (b) The Ca^2+ ion
is coordinated to Ser40 OG and Asn61 OD1 from all three chains.
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