FIGURE 6.

Structures of SpOatA_C and NmApe. (A) Cartoon representations identifying the α-helices (gray), β-strands (green), and coils (white) of the atypical α/β hydrolase fold adopted by the two enzymes. Also shown, in stick form, are the amino acids comprising the respective catalytic triads. The β-strands forming the putative CBM of NmApe are depicted in steel blue. (B) Surface representations of SpOatA_C and NmApe depicting the catalytic triad and oxyanion hole residues within shallow pockets of the respective enzymes (PDB IDs 5UFY and 4K7J, respectively).