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ADO46858.1 | Pyridoxal-5'-phosphate-dependent protein beta subunit; Catalyzes the anaerobic formation of alpha-ketobutyrate and ammonia from threonine in a two-step reaction. The first step involved a dehydration of threonine and a production of enamine intermediates (aminocrotonate), which tautomerizes to its imine form (iminobutyrate). Both intermediates are unstable and short-lived. The second step is the nonenzymatic hydrolysis of the enamine/imine intermediates to form 2- ketobutyrate and free ammonia. In the low water environment of the cell, the second step is accelerated by RidA. (329 aa) | ||||
dsdA | TIGRFAM: D-serine ammonia-lyase; KEGG: enc:ECL_00023 D-serine deaminase; PFAM: Pyridoxal-5'-phosphate-dependent protein beta subunit. (434 aa) | ||||
ilvA | Threonine dehydratase, biosynthetic; Catalyzes the anaerobic formation of alpha-ketobutyrate and ammonia from threonine in a two-step reaction. The first step involved a dehydration of threonine and a production of enamine intermediates (aminocrotonate), which tautomerizes to its imine form (iminobutyrate). Both intermediates are unstable and short-lived. The second step is the nonenzymatic hydrolysis of the enamine/imine intermediates to form 2- ketobutyrate and free ammonia. In the low water environment of the cell, the second step is accelerated by RidA. (514 aa) | ||||
ADO49955.1 | TIGRFAM: threonine synthase; KEGG: cko:CKO_03383 threonine synthase; PFAM: Pyridoxal-5'-phosphate-dependent protein beta subunit. (428 aa) |