Login   |   Regist

Metab Eng. 2000 Jan;2(1):34-41. Construction and characterization of an oxalic acid nonproducing strain of Aspergillus niger. Pedersen H, Christensen B, Hjort C, et al.



Click on the "GO TO" button to display the flux map.

Font-size: Color: Global color
ATP production rate Maximum N/A -R01786-R04779+2.5*R01061+R01512+R00200+2.5*R00209
+2.5*R00267+2.5*R08549-R00405+1.5*R00402+2.5*R00342
+2.5*R00214
ATP production rate Minium 514 -R01786-R04779+2.5*R01061+R01512+R00200+2.5*R00209
+2.5*R08549-R00405+1.5*R00402+2.5*R00342
NADPH production rate Maximum N/A R02736+R01528+R00267+R00214
NADPH production rate Minium 116 R02736+R01528
ATP production rate Maximum N/A -R01786-R04779+2.5*R01061+R01512+R00200+2.5*R00209
+2.5*R00267+2.5*R08549-R00405+1.5*R00402+2.5*R00342
+2.5*R00214
ATP production rate Minium 382.5 -R01786-R04779+2.5*R01061+R01512+R00200+2.5*R00209
+2.5*R08549-R00405+1.5*R00402+2.5*R00342
NADPH production rate Maximum N/A R02736+R01528+R00267+R00214
NADPH production rate Minium 134 R02736+R01528
Growth Condition
Strains Aspergillus niger BO-1
Genotype Wild type,producing oxalic acid as a by-product which causes problems with downstream processing of industrial enzymes.
Culture medium The Aspergillus strains were grown in a defined medium containing: 15g/L glucose monohydrate, 7.3g/L (NH4)2SO4, 1.5g/L KH2PO4, 1.0g/L MgSO4-7H2O, 1.0g/L NaCl, 0.1g/L CaCl2-2H2O, 0.5ml/L sb2121, 7.2mg/L ZnSO4-7H2O, 1.3mg/L CuSO4-5H2O, 0.3mg/L NiCl2-6H2O, and 6.9mg/L FeSO4-7H2O.
Carbon source Glucose
Growth rate 0.19/h
Case-specific description Metabolic fluxes in the central metabolism of A.niger BO-1 during batch cultivation (BAN26).
Growth Condition
Strains A.niger oah disruptant 4-1
Genotype The oah gene encoding oxaloacetate hydrolase (EC 3.7.1.1) was disrupted in a glucoamylase-producing strain of A. niger and the resulting strain was incapable of producing oxalic acid.
Culture medium The Aspergillus strains were grown in a defined medium containing: 15g/L glucose monohydrate, 7.3g/L (NH4)2SO4, 1.5g/L KH2PO4, 1.0g/L MgSO4-7H2O, 1.0g/L NaCl, 0.1g/L CaCl2-2H2O, 0.5ml/L sb2121, 7.2mg/L ZnSO4-7H2O, 1.3mg/L CuSO4-5H2O, 0.3mg/L NiCl2-6H2O, and 6.9mg/L FeSO4-7H2O.
Carbon source Glucose
Growth rate 0.18/h
Case-specific description Metabolic fluxes in the central metabolism of 4-1 during batch cultivation (BAN41).
Specific Rate (mmol g-1 h-1)
glucose 10.29
citrate 4.96
Oxalic 4.29
Specific Rate (mmol g-1 h-1)
glucose 9.58
citrate 4.035
Oxalic 0
Source