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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Proteins. 2011 Apr 12;79(6):1820–1829. doi: 10.1002/prot.23006

FIGURE 1.

FIGURE 1

The C. perfringens PepcA fold (left) and the E. coli Pepc fold viewed from above the active-site at the C-terminal end of the β-barrel. Insertions in the folds are indicated via the color scheme (compare to Figure 3). The insertions in the E. coli fold are at the N-terminus (red), after β-strands β1 (orange), β2 (yellow) and β3 (light blue). The helix-turn-helix insertion in the C. perfringens fold follows residue 360 (blue). Malonate is bound in the active-site of PepcA; a PEP analog is bound in the active-site of Pepc.