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. 2021 Aug 8;11(8):800. doi: 10.3390/life11080800

Figure 2.

Figure 2

Figure 2

Theoretically predicted optimum model for the transphosphorylation of 3′,5′ cGMP [16] (a) as well as crystal structures of 3′,5′ cGMP [28] (b) and 3′,5′ cAMP [29] (c). Color coding: C—grey; O—red; N—blue; P—orange; H—white.