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Molecular cloning and functional characterization of multiple NADPH-cytochrome P450 reductases from Andrographis paniculata. 2017

Huixin Lin, and Jian Wang, and Mengdie Qi, and Juan Guo, and Qixian Rong, and Jinfu Tang, and Yisheng Wu, and Xiaojing Ma, and Luqi Huang
National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.

Andrographis paniculata (Burm.f.) Wall. ex Nees is widely used as medicinal herb in Southern and Southeastern Asia and andrographolide is its main medicinal constituent. Based on the structure of andrographolide, it has been proposed that cytochrome P450 enzymes play vital roles on its biosynthesis. NADPH:cytochrome P450 reductase (CPR) is the most important redox partner of multiple P450s. In this study, three CPRs were identified in the genomic data of A. paniculata (namely ApCPR1, ApCPR2, and ApCPR3), and their coding regions were cloned. They varied from 62% to 70% identities to each other at the amino acid sequence level. ApCPR1 belongs to Class I of dicotyledonous CPR while both ApCPR2 and ApCPR3 are grouped to Class II. The recombinant enzymes ApCPR1 and ApCPR2 reduced cytochrome c and ferricyanide in an NADPH-dependent manner. In yeast, they supported the activity of CYP76AH1, a ferruginol-forming enzyme. However, ApCPR3 did not show any enzymatic activities either in vitro or in vivo. Quantitative real-time PCR analysis showed that both ApCPR1 and ApCPR2 expressed in all tissues examined, but ApCPR2 showed higher expression in leaves. Expression of ApCPR2 was inducible by MeJA and its pattern matched with andrographolide accumulation. Present investigation suggested ApCPR2 involves in the biosynthesis of secondary metabolites including andrographolide.

UI MeSH Term Description Entries
D009251 NADPH-Ferrihemoprotein Reductase A flavoprotein that catalyzes the reduction of heme-thiolate-dependent monooxygenases and is part of the microsomal hydroxylating system. EC 1.6.2.4. Cytochrome P-450 Reductase,Ferrihemoprotein P-450 Reductase,NADPH Cytochrome P-450 Oxidoreductase,NADPH Cytochrome P-450 Reductase,NADPH Cytochrome c Reductase,Cytochrome P-450 Oxidase,Cytochrome P450 Reductase,Ferrihemoprotein P450 Reductase,NADPH Cytochrome P450 Oxidoreductase,NADPH Cytochrome P450 Reductase,NADPH-Cytochrome P450 Reductase,NADPH-P450 Reductase,Cytochrome P 450 Oxidase,Cytochrome P 450 Reductase,Ferrihemoprotein P 450 Reductase,NADPH Cytochrome P 450 Oxidoreductase,NADPH Cytochrome P 450 Reductase,NADPH Ferrihemoprotein Reductase,NADPH P450 Reductase,Oxidase, Cytochrome P-450,P-450 Oxidase, Cytochrome,P450 Reductase, Cytochrome,P450 Reductase, NADPH-Cytochrome,Reductase, Cytochrome P-450,Reductase, Cytochrome P450,Reductase, Ferrihemoprotein P-450,Reductase, Ferrihemoprotein P450,Reductase, NADPH-Cytochrome P450,Reductase, NADPH-Ferrihemoprotein,Reductase, NADPH-P450
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D004224 Diterpenes Twenty-carbon compounds derived from MEVALONIC ACID or deoxyxylulose phosphate. Diterpene,Diterpenes, Cembrane,Diterpenes, Labdane,Diterpenoid,Labdane Diterpene,Norditerpene,Norditerpenes,Norditerpenoid,Cembranes,Diterpenoids,Labdanes,Norditerpenoids,Cembrane Diterpenes,Diterpene, Labdane,Labdane Diterpenes
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D055162 Biocatalysis The facilitation of biochemical reactions with the aid of naturally occurring catalysts such as ENZYMES.
D023281 Genomics The systematic study of the complete DNA sequences (GENOME) of organisms. Included is construction of complete genetic, physical, and transcript maps, and the analysis of this structural genomic information on a global scale such as in GENOME WIDE ASSOCIATION STUDIES. Functional Genomics,Structural Genomics,Comparative Genomics,Genomics, Comparative,Genomics, Functional,Genomics, Structural
D035685 Andrographis A plant genus of the family ACANTHACEAE. Members contain andrographolide and other DITERPENES and androechin, a CHALCONE. Andrographi

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