title: Salicylic acid carboxyl methyltransferase induced in hairy root cultures of Atropa belladonna after treatment with exogeneously added salicylic acid.
abstract: In Atropa belladonna hairy roots, exogeneously added salicylic acid (SA) is converted to methyl salicylate (MSA) through the reaction, which might be catalysed by S-adenosyl-L-methionine: salicylic acid carboxyl methyltransferase (SAMT). Here we cloned a cDNA for A. belladonna SAMT (AbSAMT1), which consisted of 357 aa residues. It was expressed in E. coli, and the recombinant AbSAMT1 showed SAMT activity. When A. belladonna hairy roots were exposed to a high concentration of SA, AbSAMT1 mRNA begins to be expressed 12 h after the exposure, and steady expression continued over 144 h.
mesh_terms: D000595:Amino Acid Sequence; D001532:Atropa belladonna / Q000187:drug effects / Q000201:enzymology* / Q000235:genetics; D015152:Blotting, Northern; D022081:Cell Surface Extensions / Q000187:drug effects / Q000201:enzymology; D002478:Cells, Cultured; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D008780:Methyltransferases / Q000235:genetics* / Q000378:metabolism; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000201:enzymology* / Q000235:genetics; D012333:RNA, Messenger / Q000187:drug effects / Q000235:genetics / Q000378:metabolism; D020156:Salicylic Acid / Q000378:metabolism / Q000494:pharmacology*; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid
chemical_list: D018076:DNA, Complementary; D010940:Plant Proteins; D012333:RNA, Messenger; D008780:Methyltransferases; C110994:salicylic acid carboxyl methyltransferase; D020156:Salicylic Acid