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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
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Substrates: -
Products: product is optically pure, more than 99% enantiomeric excess. (-)-Matairesinol is formed preferentially in the in vitro reactions with enzyme preparations. The opposite (+)-enantiomer is isolated from Daphne genkwa shoot
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
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Substrates: -
Products: product is optically pure, more than 99% enantiomeric excess. (-)-Matairesinol is formed preferentially in the in vitro reactions with enzyme preparations. The opposite (+)-enantiomer is isolated from Daphne odora callus
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: the enantiomeric purity of formed (-)-matairesinol is over 99.9% in the reaction with the recombinant enzyme when tested with racemic secoisolariciresinol, high enantioselectivity, LC/MS and chiral HPLC analysis
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
-
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: conversion is enantiospecific, reaction proceeds via the corresponding lactol intermediate
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Phialocephala podophylli
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Phialocephala podophylli PPE7
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: conversion is enantiospecific, reaction proceeds via the corresponding lactol intermediate
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: NAD+ binds first followed by the substrate (-)-secoisolariciresinol. For hydride transfer, the incoming hydride abstracted from the substrate takes up the pro-S position in the NADH formed
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: nicotinamide and the substrate are in the proper orientation for the well established B-face-specific hydride transfer to C-4 from the corresponding substrate reaction center, crystallization data. The Lys171 residue lowers the pKa of the phenolic hydroxyl group of the Tyr167 in the catalytic triad together with the positively charged NAD+. The Ser153 residue then shares its proton with the phenolic anionic group of Tyr167, and in this way, the latter can serve as a general base in substrate deprotonation during catalysis. Concomitant deprotonation of the (-)-secoisolariciresinol is then presumed to occur via the phenolic anion of Tyr167 with hydride transfer to NAD+, followed by nucleophilic attack to form the (-)-lactol intermediate from (-)-secoisolariciresinol. Subsequent dehydrogenation of the (-)-lactol can then occur by the same process involving Tyr167 as before and a newly bound NAD+ molecule to afford the dibenzyl furanone, (-)-matairesinol
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
?
(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
-
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
?
(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Phialocephala podophylli
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Phialocephala podophylli PPE7
Substrates: -
Products: -
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(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
?
(-)-secoisolariciresinol + 2 NAD+
(-)-matairesinol + 2 NADH + 2 H+
Substrates: -
Products: -
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low expression
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high expression
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high expression level of FkSIRD
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seasonal alteration in amounts of major lignans, such as pinoresinol, matairesinol, and arctigenin, analysis of gene expression profile of secoisolariciresinol dehydrogenase (SIRD) and other related enzymes in the leaves of Forsythia suspense from April to November. The SIRD expression is prominent from April to May, not detected in June to July, and then increases again from September to November. All of the lignans in the leaf continuously increase from April to June, reach the maximal level in June, and then decrease
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additional information
no expression detected in leaf and flower. The expression levels of enzyme are not consistent with the amounts of podophyllotxin in the tissues tested
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additional information
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tissue- and species-specific expression of the lignan biosynthesis-related gene FkSIRD, transcriptome analysis, overview. The expression levels of DIR, PLR, SIRD, and MOMT are 40fold, 5fold, 50fold, and 2fold higher in callus than in leaf, respectively
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additional information
expression pattern of PhSDH in different tissues and under abiotic stress, overview. PhSDH has the lowest expression in leaf compared to stem and root
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additional information
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expression pattern of PhSDH in different tissues and under abiotic stress, overview. PhSDH has the lowest expression in leaf compared to stem and root
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evolution
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molecular phylogenetic analysis of specialized metabolic enzyme genes from lignan-producing plants, two common gene clusters include genes from various plants and plant lineage-specific gene clusters. The specialized metabolic enzyme genes from lignan-producing plants include enzymes involved in the early common lignan biosynthesis upstream of matairesinol such as PLR and SIRD, suggesting that they have occurred in their ancestral plants and conserved their biological functions
metabolism
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the enzyme is involved in the lignan biosynthesis pathway, overview
metabolism
the enzyme is involved in the lignan biosynthetic pathways in Forsythia, overview
metabolism
the enzyme is part of the podophyllotoxin, PPT, biosynthetic pathway
metabolism
Phialocephala podophylli
the enzyme is part of the podophyllotoxin, PPT, biosynthetic pathway
metabolism
the enzyme is part of the podophyllotoxin, PPT, biosynthetic pathway, overview. Podophyllotoxin is an important aryltetralin lignan, that possesses antitumor and antihyperlipidemic activities
metabolism
the enzyme catalyzes a step in the podophyllotoxin biosynthesis pathway
metabolism
the enzyme is involved in the enzymatic cascade for (-)-podophyllotoxin biosynthesis
metabolism
Phialocephala podophylli PPE7
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the enzyme is part of the podophyllotoxin, PPT, biosynthetic pathway
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physiological function
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matairesinol biosynthesis is prominently enhanced and matairesinol is highly accumulated in callus
physiological function
the enzyme secoisolariciresinol dehydrogenase facilitates the dehydrogenation of secoisolariciresinol to form matairesinol, a mid-pathway intermediate product in podophyllotoxin, PPT, biosynthesis
physiological function
Phialocephala podophylli
the enzyme secoisolariciresinol dehydrogenase facilitates the dehydrogenation of secoisolariciresinol to form matairesinol, a mid-pathway intermediate product in podophyllotoxin, PPT, biosynthesis
physiological function
the enzyme SIRD is involved in the biosynthesis of lignan matairesinol in Forsythia. The leaves show seasonal alteration in amounts of major lignans, such as pinoresinol, matairesinol, and arctigenin, gene expression profile of secoisolariciresinol dehydrogenase (SIRD) and other related enzymes in the leaves of Forsythia suspense from April to November: all of the lignans in the leaf continuously increase from April to June, reach the maximal level in June, and then decrease
physiological function
Phialocephala podophylli PPE7
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the enzyme secoisolariciresinol dehydrogenase facilitates the dehydrogenation of secoisolariciresinol to form matairesinol, a mid-pathway intermediate product in podophyllotoxin, PPT, biosynthesis
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additional information
the enzyme forms a homotetramer composed of an alpha/beta single domain structure with a dinucleotide-binding Rossmann fold for the binding of NAD+ and an active site with a highly conserved catalytic triad of amino acids, Ser153, Tyr167 and Lys171
additional information
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the enzyme forms a homotetramer composed of an alpha/beta single domain structure with a dinucleotide-binding Rossmann fold for the binding of NAD+ and an active site with a highly conserved catalytic triad of amino acids, Ser153, Tyr167 and Lys171
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K171A
mutation in conserved catalytic triad, complete loss of activity
S153A
mutation in conserved catalytic triad, severe reduction of activity
Y167A
mutation in conserved catalytic triad, complete loss of activity
additional information
the two genes, termed plr-PpH and sdh-PpH, encoding pinoresinol-lariciresinol reductase (PLR) and secoisolariciresinol dehydrogenase (SDH), are linked to form two bifunctional fusion genes, plr-sdh and sdh-plr, which are expressed in Escherichia coli and purified. The proteins are linked via a (GGGGS)4 protein linker to maintain flexibility. Bioconversion in vitro at 22°C for 60 min shows that the conversion efficiency of fusion protein PLR-SDH is higher than that of the mixture of recombinant PLR and reacombinant SDH. The percent conversion of (+)-pinoresinol to matairesinol is 49.8% using PLR-SDH and only 17.7% using a mixture of rPLR and rSDH. Conversion of (+)-pinoresinol by fusion protein SDH-PLR stops at the intermediate product, secoisolariciresinol. In vivo, (+)-pinoresinol is completely converted to matairesinol by living recombinant Escherichia coli expressing PLR-SDH without addition of cofactors
additional information
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the two genes, termed plr-PpH and sdh-PpH, encoding pinoresinol-lariciresinol reductase (PLR) and secoisolariciresinol dehydrogenase (SDH), are linked to form two bifunctional fusion genes, plr-sdh and sdh-plr, which are expressed in Escherichia coli and purified. The proteins are linked via a (GGGGS)4 protein linker to maintain flexibility. Bioconversion in vitro at 22°C for 60 min shows that the conversion efficiency of fusion protein PLR-SDH is higher than that of the mixture of recombinant PLR and reacombinant SDH. The percent conversion of (+)-pinoresinol to matairesinol is 49.8% using PLR-SDH and only 17.7% using a mixture of rPLR and rSDH. Conversion of (+)-pinoresinol by fusion protein SDH-PLR stops at the intermediate product, secoisolariciresinol. In vivo, (+)-pinoresinol is completely converted to matairesinol by living recombinant Escherichia coli expressing PLR-SDH without addition of cofactors
additional information
assembly of plant enzymes in Escherichia coli for the production of the valuable (-)-podophyllotoxin precursor (-)-pluviatolide. (-)-Pluviatolide is considered a crossroad compound in lignan biosynthesis, because the methylenedioxy bridge in its structure, resulting from the oxidation of (-)-matairesinol, channels the biosynthetic pathway toward the microtubule depolymerizer (-)-podophyllotoxin. This oxidation reaction is catalyzed with high regio- and enantioselectivity by a cytochrome P450 monooxygenase from Sinopodophyllum hexandrum (CYP719A23), which is expressed and optimized regarding redox partners in Escherichia coli. Pinoresinol-lariciresinol reductase from Forsythia intermedia (FiPLR), secoisolariciresinol dehydrogenase from Podophyllum pleianthum (PpSDH), and CYP719A23 are coexpressed together with a suitable NADPH-dependent reductase to ensure P450 activity, allowing for four sequential biotransformations without intermediate isolation. By using an Escherichia coli strain coexpressing the enzymes originating from four plants, (+)-pinoresinol is efficiently converted, allowing the isolation of enantiopure (-)-pluviatolide at a concentration of 137 mg/l (enantiomeric excess over 99% with 76% isolated yield), reaction scheme and method, overview
additional information
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assembly of plant enzymes in Escherichia coli for the production of the valuable (-)-podophyllotoxin precursor (-)-pluviatolide. (-)-Pluviatolide is considered a crossroad compound in lignan biosynthesis, because the methylenedioxy bridge in its structure, resulting from the oxidation of (-)-matairesinol, channels the biosynthetic pathway toward the microtubule depolymerizer (-)-podophyllotoxin. This oxidation reaction is catalyzed with high regio- and enantioselectivity by a cytochrome P450 monooxygenase from Sinopodophyllum hexandrum (CYP719A23), which is expressed and optimized regarding redox partners in Escherichia coli. Pinoresinol-lariciresinol reductase from Forsythia intermedia (FiPLR), secoisolariciresinol dehydrogenase from Podophyllum pleianthum (PpSDH), and CYP719A23 are coexpressed together with a suitable NADPH-dependent reductase to ensure P450 activity, allowing for four sequential biotransformations without intermediate isolation. By using an Escherichia coli strain coexpressing the enzymes originating from four plants, (+)-pinoresinol is efficiently converted, allowing the isolation of enantiopure (-)-pluviatolide at a concentration of 137 mg/l (enantiomeric excess over 99% with 76% isolated yield), reaction scheme and method, overview
additional information
podophyllotoxin biosynthesis pathway genes expression at low temperature. The low temperature enhances the podophyllotoxin accumulation in Dysosma versipellis
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DNA and amino acid sequence determination and analysis, sequence comparisons, cloning and expression in Escherichiaa coli strain JM109. Confirmation that the SD gene sequence originates from Phialocephala podophylli strain PPE7 fungal gDNA and is not a product from amplification of Podophyllum peltatum gDNA plant contamination is achieved through PCR amplification of any contaminating rbcL plant gene sequences in the PPE7 fungal gDNA template samples
Phialocephala podophylli
expression in Escherichia coli
functional coexpression of pinoresinol-lariciresinol reductase from Forsythia intermedia (FiPLR), secoisolariciresinol dehydrogenase from Podophyllum pleianthum (PpSDH), and CYP719A23 together with a suitable NADPH-dependent reductase to ensure P450 activity in Escherichia coli. Escherichia coli is cotransformed with two plasmids, generating a modular coexpression system: a pCDFDuet-1 vector harboring the genes encoding for FiPLR and PpSDH (FiPLR-PpSDH module) and either a pETDuet-1 or pET28a-(+) vector harboring P450-redox partner combinations (P450-module), method, overview
gene FkSIRD, DNA and amino acid sequence determination and analysis from Forsythia genome, phylogenetic analysis, quantitative RT-PCR enzyme expression analysis
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gene PhSDH, sequence comparisons, semiquantitative RT-PCR expression analysis
gene sdh-PpH, DNA and amino acid sequence determination and analysis, sequence comparisons, recombinant expression of His-tagged enzyme in Escherichia coli strain M15. Genes plr-PpH, encoding pinoresinol-lariciresinol reductase (PLR), and sdh-PpH are linked to form two bifunctional fusion genes, plr-sdh and sdh-plr, which are expressed as functional His-tagged proteins in Escherichia coli strain M15. Establishment of a high-efficiency system for the conversion of (+)-pinoresinol to (-)-matairesinol in Escherichia coli expressing a Sdh-PpH fusion protein
gene SDH_Pp7, DNA and amino acid sequence determination and analysis, sequence comparisons, cloning and expression in Escherichia coli strain JM109, compatible codon optimization for expression in the heterologous host Pichia pastoris
recombinant overexpression of endogenous enzymes secoisolariciresinol dehydrogenase (SDH) and pinoresinollariciresinol reductase (PLR) in Dysosma versipellis, quantitative RT-PCR expression analysis
expression in Escherichia coli
expression in Escherichia coli
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Xia, Z.Q.; Costa, M.A.; Pelissier, H.C.; Davin, L.B.; Lewis, N.G.
Secoisolariciresinol dehydrogenase purification, cloning, and functional expression. Implications for human health protection
J. Biol. Chem.
276
12614-12623
2001
Forsythia x intermedia (Q94KL7), Forsythia x intermedia, Podophyllum peltatum (Q94KL8), Podophyllum peltatum
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Youn, B.; Moinuddin, S.G.; Davin, L.B.; Lewis, N.G.; Kang, C.
Crystal structures of apo-form and binary/ternary complexes of Podophyllum secoisolariciresinol dehydrogenase, an enzyme involved in formation of health-protecting and plant defense lignans
J. Biol. Chem.
280
12917-12926
2005
Podophyllum peltatum (Q94KL8)
brenda
Lan, X.; Ren, S.; Yang, Y.; Chen, M.; Yang, C.; Quan, H.; Zhong, G.; Liao, Z.
Molecular cloning and characterization of the secoisolariciresinol dehydrogenase gene involved in podophyllotoxin biosynthetic pathway from Tibet Dysosma
J. Med. Plant Res.
4
484-489
2010
Dysosma tsayuensis (Q1ZZ69)
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brenda
Okunishi, T.; Sakakibara, N.; Suzuki, S.; Umezawa, T.; Shimada, M.
Stereochemistry of matairesinol formation by Daphne secoisolariciresinol dehydrogenase
J. Wood Sci.
50
77-81
2004
Daphne odora, Daphne genkwa
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Moinuddin, S.G.; Youn, B.; Bedgar, D.L.; Costa, M.A.; Helms, G.L.; Kang, C.; Davin, L.B.; Lewis, N.G.
Secoisolariciresinol dehydrogenase: mode of catalysis and stereospecificity of hydride transfer in Podophyllum peltatum
Org. Biomol. Chem.
4
808-816
2006
Podophyllum peltatum (Q94KL8), Podophyllum peltatum
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Kuo, H.J.; Wei, Z.Y.; Lu, P.C.; Huang, P.L.; Lee, K.T.
Bioconversion of pinoresinol into matairesinol by use of recombinant Escherichia coli
Appl. Environ. Microbiol.
80
2687-2692
2014
Dysosma pleiantha (W8NQ72), Dysosma pleiantha
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Morimoto, K.; Satake, H.
Seasonal alteration in amounts of lignans and their glucosides and gene expression of the relevant biosynthetic enzymes in the Forsythia suspense leaf
Biol. Pharm. Bull.
36
1519-1523
2013
Forsythia x intermedia (Q94KL7)
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Arneaud, S.L.; Porter, J.R.
Investigation and expression of the secoisolariciresinol dehydrogenase gene involved in podophyllotoxin biosynthesis
Mol. Biotechnol.
57
961-973
2015
Phialocephala podophylli (A0A0M5K823), Phialocephala podophylli PPE7 (A0A0M5K823), Podophyllum peltatum (A0A0M4J2R3), Podophyllum peltatum
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Shiraishi, A.; Murata, J.; Matsumoto, E.; Matsubara, S.; Ono, E.; Satake, H.
De novo transcriptomes of Forsythia koreana using a novel assembly method insight into tissue- and species-specific expression of lignan biosynthesis-related gene
PLoS ONE
11
e0164805
2016
Forsythia koreana
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Wankhede, D.P.; Biswas, D.K.; Rajkumar, S.; Sinha, A.K.
Expressed sequence tags and molecular cloning and characterization of gene encoding pinoresinol/lariciresinol reductase from Podophyllum hexandrum
Protoplasma
250
1239-1249
2013
Sinopodophyllum hexandrum (A3F5F0), Sinopodophyllum hexandrum
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Decembrino, D.; Ricklefs, E.; Wohlgemuth, S.; Girhard, M.; Schullehner, K.; Jach, G.; Urlacher, V.B.
Assembly of plant enzymes in E. coli for the production of the valuable (-)-podophyllotoxin precursor (-)-pluviatolide
ACS Synth. Biol.
9
3091-3103
2020
Dysosma pleiantha (A0A0B4KYE1), Dysosma pleiantha
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Palaniyandi, K.; Jun, W.
Low temperature enhanced the podophyllotoxin accumulation vis-a-vis its biosynthetic pathway gene(s) expression in Dysosma versipellis (Hance) M. Cheng - a pharmaceutically important medicinal plant
Process Biochem.
95
197-203
2020
Dysosma versipellis (B2LSD3)
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