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. 2011 Sep 21;101(6):1440–1449. doi: 10.1016/j.bpj.2011.07.048

Table 3.

Coordination numbers for the magnesium ion in the CGMP, ATP and CGDP, ADP substates derived from radial distribution functions (see Fig. S5)

Oxygen carrier C(GMP, ATP) C(GDP, ADP)
GMP/GDP 1.5 0.5
ATP/ADP 2 1
Protein 1 2
Water 1.5 2.5

Oxygens from GMP/GDP, ATP/ADP, protein, and water in the coordination sphere of Mg2+ were taken into account up to a cutoff radius of 2.9 Å.