Glutamine-scyllo-inositol transaminase (EC 2.6.1.50) is a pyridoxal phosphate-dependent enzyme that catalyzes the chemical reaction
The two substrates of this enzyme are L-glutamine and the inositol derivative, 2,4,6/3,5-pentahydroxycyclohexanone (1). Its products are 2-oxoglutaramic acid and 1-amino-1-deoxy-scyllo-inositol (2). The reaction is part of the biosynthesis of streptomycin in Streptomyces bikiniensis.
This enzyme is a transferase, specifically a transaminase, which transfer nitrogenous groups. The systematic name of this enzyme class is L-glutamine:2,4,6/3,5-pentahydroxycyclohexanone aminotransferase. Other names in common use include glutamine scyllo-inosose aminotransferase, L-glutamine-keto-scyllo-inositol aminotransferase, glutamine-scyllo-inosose transaminase, and L-glutamine-scyllo-inosose transaminase.
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