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Figure 3.
FIGURE 3. The reaction scheme of mP5N-1. A, mP5N-1 has two
enzymatic activities: nucleotidase activity (steps 1 and 2a) and
phosphotransferase activity (steps 1 and 2b). B, the proposed
catalytic mechanism for nucleotidase activity of mP5N-1. "R"
represents ribonucleoside. Individual states of the reaction
mechanism include apoenzyme (I), active enzyme (II), the
substrate complex (III), the substrate-transition complex (IV),
the phosphoenzyme intermediate (V), the product-transition
complex (VI), and the product complex (VII).
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