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On page 1 showing 1 ~ 2 papers out of 2 papers

Disruption of a putative mitochondrial oxaloacetate shuttle protein in Aspergillus carbonarius results in secretion of malic acid at the expense of citric acid production.

  • Lei Yang‎ et al.
  • BMC biotechnology‎
  • 2019‎

In filamentous fungi, transport of organic acids across the mitochondrial membrane is facilitated by active transport via shuttle proteins. These transporters may transfer different organic acids across the membrane while taking others the opposite direction. In Aspergillus niger, accumulation of malate in the cytosol can trigger production of citric acid via the exchange of malate and citrate across the mitochondrial membrane. Several mitochondrial organic acid transporters were recently studied in A. niger showing their effects on organic acid production.


Identification of novel citramalate biosynthesis pathways in Aspergillus niger.

  • Abeer H Hossain‎ et al.
  • Fungal biology and biotechnology‎
  • 2019‎

The filamentous fungus Aspergillus niger is frequently used for industrial production of fermentative products such as enzymes, proteins and biochemicals. Notable examples of industrially produced A. niger fermentation products are glucoamylase and citric acid. Most notably, the industrial production of citric acid achieves high titers, yield and productivities, a feat that has prompted researchers to propose A. niger to serve as heterologous production host for the industrial production of itaconic acid (IA), a promising sustainable chemical building-block for the fabrication of various synthetic resins, coatings, and polymers. Heterologous production of IA in A. niger has resulted in unexpected levels of metabolic rewiring that has led us to the identification of IA biodegradation pathway in A. niger. In this study we have attempted to identify the final product of the IA biodegradation pathway and analyzed the effect of metabolic rewiring on the bioproduction of 9 industrially relevant organic acids.


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