Rhea - reaction knowledgebase

Enzymes

UniProtKB ^help_outline	1 proteins
Enzyme class ^help_outline	EC 1.14.14.97 methyltetrahydroprotoberberine 14-monooxygenase
GO Molecular Function ^help_outline	GO:0047084 methyltetrahydroprotoberberine 14-monooxygenase activity

Reaction participants Show >> << Hide

Name ^help_outline (S)-cis-N-methylcanadine Identifier CHEBI:50540 (Beilstein: 4239338) ^help_outline Charge 1 Formula C21H24NO4 InChIKey^help_outline IPABSWBNWMXCHM-JTSKRJEESA-N SMILES^help_outline [H][C@@]12Cc3ccc(OC)c(OC)c3C[N@+]1(C)CCc1cc3OCOc3cc21 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name^help_outline reduced [NADPH—hemoprotein reductase] Identifier RHEA-COMP:11964 Reactive part ^help_outline
- Name ^help_outline FMNH₂ Identifier CHEBI:57618 (Beilstein: 6258176) ^help_outline Charge -2 Formula C17H21N4O9P InChIKey^help_outline YTNIXZGTHTVJBW-SCRDCRAPSA-L SMILES^help_outline Cc1cc2Nc3c([nH]c(=O)[nH]c3=O)N(C[C@H](O)[C@H](O)[C@H](O)COP([O-])([O-])=O)c2cc1C 2D coordinates Mol file for the small molecule Search links Involved in 820 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Search links Involved in 758 reaction(s) Find proteins in UniProtKB for this molecule
Name ^help_outline O₂ Identifier CHEBI:15379 (CAS: 7782-44-7) ^help_outline Charge 0 Formula O2 InChIKey^help_outline MYMOFIZGZYHOMD-UHFFFAOYSA-N SMILES^help_outline O=O 2D coordinates Mol file for the small molecule Search links Involved in 2,779 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline allocryptopine Identifier CHEBI:17390 (CAS: 24240-04-8,485-91-6) ^help_outline Charge 0 Formula C21H23NO5 InChIKey^help_outline HYBRYAPKQCZIAE-UHFFFAOYSA-N SMILES^help_outline COc1ccc2CC(=O)c3cc4OCOc4cc3CCN(C)Cc2c1OC 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name^help_outline oxidized [NADPH—hemoprotein reductase] Identifier RHEA-COMP:11965 Reactive part ^help_outline
- Name ^help_outline FMN Identifier CHEBI:58210 Charge -3 Formula C17H18N4O9P InChIKey^help_outline ANKZYBDXHMZBDK-SCRDCRAPSA-K SMILES^help_outline C12=NC([N-]C(C1=NC=3C(N2C[C@@H]([C@@H]([C@@H](COP(=O)([O-])[O-])O)O)O)=CC(=C(C3)C)C)=O)=O 2D coordinates Mol file for the small molecule Search links Involved in 830 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Search links Involved in 758 reaction(s) Find proteins in UniProtKB for this molecule
Name ^help_outline H₂O Identifier CHEBI:15377 (CAS: 7732-18-5) ^help_outline Charge 0 Formula H2O InChIKey^help_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILES^help_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,337 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline H⁺ Identifier CHEBI:15378 Charge 1 Formula H InChIKey^help_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILES^help_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule

Cross-references

	RHEA:23684	RHEA:23685	RHEA:23686	RHEA:23687
Reaction direction	undefined	left-to-right	right-to-left	bidirectional
UniProtKB ^help_outline	1 proteins
EC numbers ^help_outline	1.14.14.97
Gene Ontology ^help_outline	GO:0047084
KEGG ^help_outline				R03842
MetaCyc ^help_outline		1.14.13.37-RXN

Publications

Isolation and characterization of a cDNA encoding (S)-cis-N-methylstylopine 14-hydroxylase from opium poppy, a key enzyme in sanguinarine biosynthesis.

Beaudoin G.A.W., Facchini P.J.

Sanguinarine is a benzo[c]phenenthridine alkaloid with potent antimicrobial properties found commonly in plants of the Papaveraceae, including the roots of opium poppy (Papaver somniferum). Sanguinarine is formed from the central 1-benzylisoquinoline intermediate (S)-reticuline via the protoberber ... >> More

Sanguinarine is a benzo[c]phenenthridine alkaloid with potent antimicrobial properties found commonly in plants of the Papaveraceae, including the roots of opium poppy (Papaver somniferum). Sanguinarine is formed from the central 1-benzylisoquinoline intermediate (S)-reticuline via the protoberberine alkaloid (S)-scoulerine, which undergoes five enzymatic oxidations and an N-methylation. The first four oxidations from (S)-scoulerine are catalyzed by cytochromes P450, whereas the final conversion involves a flavoprotein oxidase. All but one gene in the biosynthetic pathway from (S)-reticuline to sanguinarine has been identified. In this communication, we report the isolation and characterization of (S)-cis-N-methylstylopine 14-hydroxylase (MSH) from opium poppy based on the transcriptional induction in elicitor-treated cell suspension cultures and root-specific expression of the corresponding gene. Along with protopine 6-hydroxylase, which catalyzes the subsequent and penultimate step in sanguinarine biosynthesis, MSH is a member of the CYP82N subfamily of cytochromes P450. The full-length MSH cDNA was expressed in Saccharomyces cerevisiae and the recombinant microsomal protein was tested for enzymatic activity using 25 benzylisoquinoline alkaloids representing a wide range of structural subgroups. The only enzymatic substrates were the N-methylated protoberberine alkaloids N-methylstylopine and N-methylcanadine, which were converted to protopine and allocryptopine, respectively. << Less

Biochem. Biophys. Res. Commun. 431:597-603(2013) [PubMed] [EuropePMC]

Comments

Published in: Rueffer, M. and Zenk, M.H. Enzymatic formation of protopines by a microsomal cytochrome-P-450 system of Corydalis vaginans. Tetrahedron Lett. 28 (1987) 5307–5310. DOI:10.1016/S0040-4039(00)96715-7