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Prepro-AtlA holoenzyme and structure of AmiA-cat. A, domain arrangement of AtlA with sites of post-translational cleavage indicated by arrows. SP, signal peptide; PP, propeptide; cat, catalytic domain; R, repeat domain. This figure was adapted and modified from Ref. 19. B, mixed α/β fold of unliganded AmiA-cat in a schematic representation with a transparent surface. The zinc ion (orange) and its coordinating residues (dark gray) are highlighted.
