Mannosylerythritol lipid biosynthesis pathway (MEL biosynthesis pathway)

The mannosylerythritol lipid (MEL) biosynthesis pathway is a fungal metabolic route primarily found in the Ustilaginomycetes class, including species such as Ustilago maydis and Pseudozyma antarctica. This pathway is responsible for producing glycolipid biosurfactants that consist of 4-O-beta-D-mannopyranosyl-meso-erythritol as the hydrophilic moiety, which is further modified by acylation and acetylation. Key enzymes in the pathway include the mannosyltransferase Emt1, the acyltransferases Mac1 and Mac2, and the acetyltransferase Mat1, which together facilitate the assembly of the lipid from erythritol and mannose precursors. While MELs themselves are highly regarded in the cosmetic and pharmaceutical industries for their antimicrobial, moisturizing, and differentiation-inducing properties, the biosynthetic pathway is not considered a primary therapeutic target for human disease. Instead, research focuses on the metabolic engineering of these enzymes to optimize the industrial production of biosurfactants for environmental and commercial applications.

Other names

MEL metabolic pathwayGlycolipid biosurfactant synthesis pathwayPseudozyma MEL synthesis pathwayUstilago maydis MEL pathway

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