Molecular cloning and sequencing of a cDNA encoding mung bean cytochrome P450 (P450C4H) possessing cinnamate 4-hydroxylase activity.
With the aid of partial amino acid sequences determined for cinnamate 4-hydroxylase (P450C4H) purified from mung bean seedlings, two cDNA clones were isolated and their inserts were completely sequenced. The nucleotide sequences of the two clones were nearly identical and contained an open reading frame predicted to encode a polypeptide consisting of 505 amino acid residues. The partial sequences determined from the purified P450C4H closely corresponded to the primary structures deduced from the cDNA sequences. This is the first isolation of cDNA clones encoding a higher plant P450 possessing clear physiological activity. Comparison to known cytochromes P450 indicated that P450C4H belongs to a novel P450 gene family.
Mizutani
M
M
International Research Laboratories, Ciba-Geigy Japan Ltd., Takarazuka, Japan.
Ward
E
E
DiMaio
J
J
Ohta
D
D
Ryals
J
J
Sato
R
R
D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D004247:DNA / Q000235:genetics; D007887:Fabaceae / Q000235:genetics*; D015971:Gene Expression Regulation, Enzymologic; D017343:Genes, Plant; D006899:Mixed Function Oxygenases / Q000235:genetics*; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides / Q000737:chemistry; D010946:Plants, Medicinal; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000235:genetics; D050564:Trans-Cinnamate 4-Monooxygenase
D009838:Oligodeoxyribonucleotides; D012333:RNA, Messenger; D004247:DNA; D003577:Cytochrome P-450 Enzyme System; D006899:Mixed Function Oxygenases; D050564:Trans-Cinnamate 4-Monooxygenase