dammarenediol 12-hydroxylase

This is an abbreviated version, for detailed information about dammarenediol 12-hydroxylase, go to the full flat file.

transferred to EC


CYP716A47, cytochrome P450-type protopanaxadiol synthase, PPDS, PqD12H, protopanaxadiol synthase


     1 Oxidoreductases
         1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
             1.14.13 With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor
       dammarenediol 12-hydroxylase


Engineering on EC - dammarenediol 12-hydroxylase

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additional information
to increase the low metabolic flux through PPDS and increase the productivity of protopanaxadiol production, enzyme PPDS is modified through transmembrane domain truncation and construction of self-sufficient PPDS-ATR1 fusion proteins. The fusion enzymes exhibit approximately 4.5fold increase in catalytic activity and 71.1% increase in protopanaxadiol production compared with PPDS and ATR1 co-expression. The engineered yeast carrying fusion protein effectively converts 96.8% of dammarenediol-II into protopanaxadiol, bioreactor in fed-batch fermentation. Construction of four fusion proteins named as PPDS-linker1-46tATR1, PPDSlinker2-46tATR1, PPDS-linker3-46tATR1, and PPDS-nolinker-46tATR1, respectively. In addition, 31tPPDS heme domain and 46tATR1 reductase domain are linked by polypeptide GSTSSGSG. Method optimization, overview. Evaluation of the oxidative stress in yeast cells induced by co-expression of PPDS and ATR1