Figure 4.
Figure 4. A: Detail of octahedral coordination of Mg^2+ ion
with 2F[o]-F[c] electron density map contoured at the 1.3 level
of the map. B: Schematic of Mg^2+ ion binding by APC35832. Mg^2+
is shown as a yellow sphere, water molecules are represented
with turquoise spheres, ion coordination is shown by violet
lines, and hydrogen bonds as green dotted lines with their
length in Å. Figure was prepared using the program
Ligplot.[20] C: A stereo view of the superimposed Mg^2+ binding
sites in APC35832 (pink) and T7 primase, PDB entry 1NUI (blue),
Mg^2+ ions are colored accordingly. Residues numbers are for the
APC35832 protein.
The above figure is reprinted
by permission from John Wiley & Sons, Inc.:
Proteins
(2008,
70,
311-319)
copyright 2008.
level
of the map. B: Schematic of Mg^2+ ion binding by APC35832. Mg^2+
is shown as a yellow sphere, water molecules are represented
with turquoise spheres, ion coordination is shown by violet
lines, and hydrogen bonds as green dotted lines with their
length in Å. Figure was prepared using the program
Ligplot.[20] C: A stereo view of the superimposed Mg^2+ binding
sites in APC35832 (pink) and T7 primase, PDB entry 1NUI (blue),
Mg^2+ ions are colored accordingly. Residues numbers are for the
APC35832 protein.