Figure 6.

Model of the AlgKXF_Ppcomplex involved in alginate acetylation and export.A, AlphaFold2 model of the Pseudomonas putida AlgKXF complex (AlgK_Pp, green; AlgX_Pp, periwinkle; AlgF_Pp, light blue). B, surface representation of the AlgKXF_Pp complex with the AlgX_Pp active site highlighted in yellow. C, AlgF_Pp residues involved in the interaction interface with AlgX_Pp. The model of AlgF_Pp is colored by secondary structure (coil, light blue; strand; blue; helix, dark blue). Residues involved in hydrogen bonding interactions, salt bridge interactions, or hydrogen bonding and salt bridge interactions are represented by blue, red, and yellow text, respectively. Residues that are underlined represent side chain interactions and residues that are italicized represent main chain interactions. In both panels the N terminiand C termini are represented by N and C, respectively.