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Figure 3.
Figure 3. Stereo diagrams of the oxyanion hole in the
TAP-DEP structure. The oxyanion hole residues Ser10, Gly44 and
Asn73, catalytic triad and DEP modified Ser10, are represented
as ball-and-sticks. The green broken-line indicates the hydrogen
bonds between the oxyanion oxygen atom and the hydrogen-donating
residues. The cyan broken-line indicates that the N  epsilon
2 of His157 is hydrogen bonded to the O2 of the leaving group of
DEP. The 2F[o] -F[c] electron density of DEP is countered at the
1s level.
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