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Figure 3.
FIG. 3. The electron density maps of the substrates and
cofactor. A, the omit F[O]-F[C] electron density map of the UDP
molecule and Mn2+ ion, contoured at 1.6  (gray) and 6.0 (blue),
respectively, superimposed with a ball-and-stick model colored
according to atom types (nitrogen, blue; carbon, black; oxygen,
red; phosphorous, purple; manganese, orange). B, the omit
F[O]-F[C] electron density map of the N-acetyllactosamine,
contoured at 1.6 (gray), superimposed
with a ball-and-stick model. C, the interactions between Mn2+,
UDP, and Asp197 side chain of GlcAT-P. The Mn2+ interactions are
shown in blue dashed lines.
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