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In enzymology, a 3-hydroxyanthranilate 4-C-methyltransferase (EC 2.1.1.97) is an enzyme that catalyzes the chemical reaction

S-adenosyl-L-methionine + 3-hydroxyanthranilate ${\displaystyle \rightleftharpoons }$ S-adenosyl-L-homocysteine + 3-hydroxy-4-methylanthranilate

Thus, the two substrates of this enzyme are S-adenosyl methionine and 3-hydroxyanthranilate, whereas its two products are S-adenosylhomocysteine and 3-hydroxy-4-methylanthranilate.

This enzyme belongs to the family of transferases, specifically those transferring one-carbon group methyltransferases. The systematic name of this enzyme class is S-adenosyl-L-methionine:3-hydroxyanthranilate 4-C-methyltransferase. This enzyme is also called 3-hydroxyanthranilate 4-methyltransferase.

References

• Fawaz F, Jones GH (1988). "Actinomycin synthesis in Streptomyces antibioticus. Purification and properties of a 3-hydroxyanthranilate 4-methyltransferase". J. Biol. Chem. 263 (10): 4602–6. PMID 2450873.

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