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Literature summary extracted from

  • Tang, S.; Hass, C.G.; Knapp, S.J.
    Ty3/gypsy-like retrotransposon knockout of a 2-methyl-6-phytyl-1,4-benzoquinone methyltransferase is non-lethal, uncovers a cryptic paralogous mutation, and produces novel tocopherol (vitamin E) profiles in sunflower (2006), Theor. Appl. Genet., 113, 783-799.
    View publication on PubMed

Organism

EC Number Organism UniProt Comment Textmining
2.1.1.295 Helianthus annuus Q2XV86 isoform MT-2
-
2.1.1.295 Helianthus annuus Q2XV89 isoform MT-1
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.1.1.295 S-adenosyl-L-methionine + 2-methyl-6-phytylbenzene-1,4-diol
-
 Helianthus annuus S-adenosyl-L-homocysteine + 2,3-dimethyl-6-phytylbenzene-1,4-diol
-
 ?

Synonyms

EC Number Synonyms Comment Organism
2.1.1.295 MT-1
-
 Helianthus annuus
2.1.1.295 MT-2
-
 Helianthus annuus

General Information

EC Number General Information Comment Organism
2.1.1.295 physiological function an isoform MT-1 homozygous mutant is non-lethal and produces 24-45% alpha-tocopherol and 55-74% beta-tocopherol as compared to 96% alpha- and 4% beta-tocopherol for wild-type Helianthus annuus
2.1.1.295 physiological function isoform MT-2 compensates for the loss of isoform MT-1 function, and the MT-2 mutation profoundly affects the synthesis of tocopherols without adversely affecting the synthesis of plastoquinone crucial for normal plant growth and development Helianthus annuus