Figure 2.
Fig. 2. Catalytic sites of G [i1]·
GDP·Mg2+·AlF[4]^- complexes. Atoms are rendered as
follows: carbon, gold; nitrogen, cyan; oxygen, red; fluorine,
yellow; aluminum, gray; and phosphorus, green. Mg2+ is shown as
a blue sphere; and phosphate oxygen atoms
are shown. Metal-coordination interactions are indicated by gray
dashed lines, and hydrogen bonds are indicated by red dashed
lines. (A) Wild-type G [i1]. (B) For (K180P)G
[i1], major (a,
occupancy, 0.25) and minor (b,
occupancy, 0.75) conformations of
Ser-47 are shown.
[i1]·
GDP·Mg2+·AlF[4]^- complexes. Atoms are rendered as
follows: carbon, gold; nitrogen, cyan; oxygen, red; fluorine,
yellow; aluminum, gray; and phosphorus, green. Mg2+ is shown as
a blue sphere; 
phosphate oxygen atoms
are shown. Metal-coordination interactions are indicated by gray
dashed lines, and hydrogen bonds are indicated by red dashed
lines. (A) Wild-type G 
0.25) and minor (b,
occupancy,