Figure 5: Schematic diagram of sanxan biosynthesis, modified according to Fialho et al.10. | Scientific Reports

Figure 5: Schematic diagram of sanxan biosynthesis, modified according to Fialho et al.10.

From: The evolutionary life cycle of the polysaccharide biosynthetic gene cluster based on the Sphingomonadaceae

Figure 5

The first step is the synthesis of nucleotide sugar precursors from glucose. The second step is the assembly of the tetrasaccharide repeat unit by the sequential activity of SsB, SsQ, SsH, and SsT glycosyltransferases, and SsX, SsY, SsZ, and SsI acyltransferases. The third step, comprising polymerization and export of the final product, is accomplished by SsS, SsG, SsC, and SsD.

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