Biotic and abiotic stresses induce AbSAMT1, encoding S-adenosyl-L-methionine: salicylic acid carboxyl methyltransferase, in Atropa belladonna
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Biosynthesis of mycophenolic acid: purification and characterization of S-adenosyl-L-methionine: demethylmycophenolic acid O-methyltransferase.
The final step in the biosynthesis of mycophenolic acid involves the transfer of a methyl group from S-adenosylmethionine to demethylmycophenolic acid. The enzyme, S-adenosylmethionine:demethylmycophenolic acid O-methyltransferase, was isolated from Penicillium stoloniferum and purified 2,700-fold by ammonium sulfate fractionation and diethylaminoethyl-cellulose and Sephadex G-200 chromatograph...
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Adomet synthetase (EC 2.5.1.6) catalyzes the formation of Adomet, which serves as a methyl group donor in highly specific transmethylation reactions involving a11 kinds of acceptor molecules such as proteins, nucleic acids, phenylpropanoid derivatives, polysaccharides, cyclic fatty acids, etc. Adomet also plays a role in amino acid biosynthesis and polyamine biosynthesis. In plants, Adomet has ...
متن کاملS-Adenosyl-l-methionine-competitive inhibitors of the histone methyltransferase EZH2 induce autophagy and enhance drug sensitivity in cancer cells
The enhancer of zeste homolog 2 (EZH2) has emerged as a novel anticancer target. Various EZH2 inhibitors have been developed in recent years. Among these, 3-deazaneplanocin A (DZNep) is known to deplete EZH2 protein expression through an indirect pathway. In contrast, GSK343 directly inhibits enzyme activity through an S-adenosyl-L-methionine-competitive pathway. Therefore, we proposed that DZN...
متن کاملA cDNA encoding S-adenosyl-L-methionine:caffeic acid 3-O-methyltransferase from Eucalyptus.
In angiosperms, OMTs (EC 2.1.1.6) are bispecific and catalyze the methylation of caffeic acid to ferulic acid and 5hydroxy-ferulic acid to sinapic acid using S-adenosyl-L-Met as methyl donor. The resulting products, ferulic acid and sinapic acid, may subsequently be converted to the corresponding alcohols that are incorporated in lignins. In gymnosperms, where syringyl lignins are absent, OMTs ...
متن کاملPurification, characterization, and molecular cloning of S-adenosyl-L-methionine: uroporphyrinogen III methyltransferase from Methanobacterium ivanovii.
An S-adenosyl-L-methionine:uroporphyrinogen III methyltransferase (SUMT) activity has been identified in Methanobacterium ivanovii and was purified 4,500-fold to homogeneity with a 38% yield. The enzyme had an apparent molecular weight of 58,200 by gel filtration and consisted of two identical subunits of Mr 29,000, as estimated by gel electrophoresis under denaturing conditions. The Km value f...
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ژورنال
عنوان ژورنال: Plant Biotechnology
سال: 2009
ISSN: 1347-6114,1342-4580
DOI: 10.5511/plantbiotechnology.26.207