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Figure 3
Comparison of the binding modes of (S)-1,2,4-butanetriol, (R)-1,2,4-butanetriol and fructose. (a) (S)-1,2,4-butanetriol (PDB entry 7oso; cyan) and (R)-1,2,4-butanetriol (salmon) superposed on fructose from EaLsc (PDB entry 4d47; green). (b) Fructose binding mode in the Gram-negative EaLsc (PDB entry 4d47; green) and BiBftA (PDB entry 6m0e; magenta). (c) Fructose and the fructosyl moiety binding mode in Gram-positive enzymes. Fructose6 (PDB entry 6vhq), raffinose (PDB entry 3byn) and sucrose (PDB entry 1pt2) from BsSacB are shown in yellow, blue and orange, respectively. Fructose from ArFFase (PDB entry 3vss) is shown in cyan. Sucrose and 1-kestose from LjInuJ (PDB entries 2yfs and 2yft) are shown in purple and pink, respectively.

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
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