Literature summary for 1.21.3.3 extracted from

Galanie, S.; Smolke, C.
Optimization of yeast-based production of medicinal protoberberine alkaloids (2015), Microb. Cell Fact., 14, 144 .

Application

Application	Comment	Organism
medicine	a Saccharomyces cerevisiae strain is engineered to express seven heterologous enzymes (Papaper somniferum norcoclaurine 6-O-methyltransferase (Ps6OMT), Papaver somniferum 3'-hydroxy-N-methylcoclaurine 4'-O-methyltransferase 2 (Ps4'OMT), Papapver somniferum coclaurine N-methyltransferase (PsCNMT), Papaver somniferum berberine bridge enzyme (PsBBE), Thalictrum flavum scoulerine 9-O-methyltransferase (TfS9OMT), Thalictrum flavum canadine synthase (TfCAS), and Arabidopsis thaliana cytochrome P450 reductase 1 (CPR)), resulting in protoberberine alkaloid production from a simple benzylisoquinoline alkaloid precursor. A number of strategies are implemented to improve flux through the pathway, including enzyme variant screening, genetic copy number variation, and culture optimization. This leads to an over 70-fold increase in canadine titer up to 1.8 mg/l. Increased canadine titers enable extension of the pathway to produce berberine, a major constituent of several traditional medicines in a microbial host. This strain is viable at pilot scale	Papaver somniferum
synthesis	heterologous production of berberine and the optimization of the engineered biosynthetic pathway from rac-norlaudanosoline to (S)-canadine in yeast involving the recombinant berberine reductase	Papaver somniferum

Cloned(Commentary)

Cloned (Comment)	Organism
canadine-producing Saccharomyces cerevisiae strain harbors expression cassettes for seven heterologous enzymes: Papaper somniferum norcoclaurine 6-O-methyltransferase (Ps6OMT), Papaver somniferum 3'-hydroxy-N-methylcoclaurine 4'-O-methyltransferase 2 (Ps4'OMT), Papapver somniferum coclaurine N-methyltransferase (PsCNMT), Papaver somniferum berberine bridge enzyme (PsBBE), Thalictrum flavum scoulerine 9-O-methyltransferase (TfS9OMT), Thalictrum flavum canadine synthase (TfCAS), and Arabidopsis thaliana cytochrome P450 reductase 1 (CPR). The expression cassettes for the methyltransferases Ps6OMT, PsCNMT, and Ps4'OMT and the cytochrome P450 reductase CPR were chromosomally integrated, TfS9OMT and TfCAS are expressed from a high-copy plasmid, and PsBBE is expressed from a second high-copy plasmid	Papaver somniferum

Cloned (Comment)

Organism

canadine-producing Saccharomyces cerevisiae strain harbors expression cassettes for seven heterologous enzymes: Papaper somniferum norcoclaurine 6-O-methyltransferase (Ps6OMT), Papaver somniferum 3'-hydroxy-N-methylcoclaurine 4'-O-methyltransferase 2 (Ps4'OMT), Papapver somniferum coclaurine N-methyltransferase (PsCNMT), Papaver somniferum berberine bridge enzyme (PsBBE), Thalictrum flavum scoulerine 9-O-methyltransferase (TfS9OMT), Thalictrum flavum canadine synthase (TfCAS), and Arabidopsis thaliana cytochrome P450 reductase 1 (CPR). The expression cassettes for the methyltransferases Ps6OMT, PsCNMT, and Ps4'OMT and the cytochrome P450 reductase CPR were chromosomally integrated, TfS9OMT and TfCAS are expressed from a high-copy plasmid, and PsBBE is expressed from a second high-copy plasmid

Papaver somniferum

Protein Variants

Protein Variants	Comment	Organism
additional information	recombinant coexpression of seven enzymes, including the three membrane-bound enzymes: the flavin-dependent oxidase berberine bridge enzyme, the cytochrome P450 canadine synthase, and a cytochrome P450 reductase, in Saccharomyces cerevisiae results in protoberberine alkaloid production from a simple benzylisoquinoline alkaloid precursor rac-norlaudanosoline. Improvement of flux through the pathway, by methods including enzyme variant screening, genetic copy number variation, and culture optimization, leading to an over 70fold increase in canadine titer up to 1.8 mg/l	Papaver somniferum

Localization

Localization	Comment	Organism	GeneOntology No.	Textmining
membrane	membrane-bound	Papaver somniferum	16020	-

Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
(S)-reticuline + O2	Papaver somniferum	-	(S)-scoulerine + H2O2	-	?

Organism

Organism	UniProt	Comment	Textmining
Papaver somniferum	P93479	-	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
(S)-reticuline + O2	-	Papaver somniferum	(S)-scoulerine + H2O2	-	?

Synonyms

Synonyms	Comment	Organism
BBE	-	Papaver somniferum
BBE1	-	Papaver somniferum
berberine bridge enzyme	-	Papaver somniferum
flavin-dependent oxidase	-	Papaver somniferum
reticuline oxidase	-	Papaver somniferum

Cofactor

Cofactor	Comment	Organism	Structure
FAD	-	Papaver somniferum