FIGURE 2.

Overall structure of AT52. A, ribbon representation. B, topology diagram. The α/β-hydrolase subdomain is in orange, the ferredoxin-like subdomain is in yellow, the KS-AT linker is in cyan, and the AT-ACP linker is in red. Helices and β-strands are numbered. The carboxypalmitoyl chain and the 12-mer peptide are shown as sticks with nitrogen and oxygen atoms in blue and red, respectively. Carbon atoms of the carboxypalmitoyl chain and of the peptide are in green and light gray, respectively. The side chains of active site residues Ser⁸⁰¹, Arg⁸²⁶, and His⁹⁰⁹ are also depicted. The same color scheme has been applied throughout all the figures.