Chemistry Letters p. 206 - 208 (2011)
Update date:2022-08-29
Topics:
Kirimura, Kohtaro
Yanaso, Satomi
Kosaka, Sachiyo
Koyama, Keiko
Hattori, Takasumi
Ishii, Yoshitaka
A reversible salicylic acid decarboxylase (Sdc), found in the yeast Trichosporon moniliiforme WU-0401, is applicable for the production of p-aminosalicylic acid (PAS) from m-aminophenol (m-AP). For the high-yield production of PAS, used as an antituberculous agent, we developed F195Y, a genetically engineered Sdc mutant. We succeeded in selectively producing PAS from m-AP through an enzymatic KolbeSchmitt reaction in aqueous solution by using recombinant Escherichia coli cells expressing the gene encoding F195Y. We found that 70mM PAS was produced at 30 °C in 15h with a conversion yield of 70% (mol/mol).
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