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Figure 3.
FIG. 3. The active site of IIB^Mtl. A, stereo view of the
active site with the backbone in light blue, side chains in red,
Cys-384 in orange, and the backbone NH bonds in dark blue with
the H[N] protons represented by small spheres. B, possible
mechanism of phosphoryl transfer from IIA^Mtl to IIB^Mtl.
Single-letter amino acid abbreviations are used with position
numbers.
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