Glutamate synthase (large subunit); Evidence 1a: Function experimentally demonstrated in the studied strain; Product type e: enzyme; Belongs to the glutamate synthase family.

L-aspartate/L-glutamate permease; Uptake of L-aspartate with the concomitant import of a proton. Can also transport aspartate hydroxamate and L-glutamate with lower affinity and efficiency.

Exported L-asparaginase; Evidence 1a: Function experimentally demonstrated in the studied strain; Product type e: enzyme; Belongs to the asparaginase 1 family.

L-asparaginase 2 (putative lipoprotein); Catalyzes the conversion of L-asparagine to L-aspartate and ammonium.

Glutamate dehydrogenase; Devoted to catabolic function of glutamate (and other amino acids of the glutamate family) utilization as sole nitrogen source. It is not involved in anabolic function of glutamate biosynthesis since B.subtilis possesses only one route of glutamate biosynthesis from ammonia, catalyzed by glutamate synthase. RocG is unable to utilize glutamate or glutamine as sole carbon source and to synthesize glutamate, but it is involved in the utilization of arginine, and proline as carbon or nitrogen source. The catabolic RocG is essential for controlling gltAB expression [...]

Cryptic glutamate dehydrogenase; GudB seems to be intrinsically inactive, however spontaneous mutations removing a 9-bp direct repeat within the wild-type gudB sequence activated the GudB protein and allowed more-efficient utilization of amino acids of the glutamate family. This insertion presumably causes severe destabilization of the fold of the protein, leading to an inactive enzyme that is very quickly degraded. The cryptic GudB serves as a buffer that may compensate for mutations in the rocG gene and that can also be decryptified for the utilization of glutamate as a single carbon [...]

Glutamine synthetase; Glutamine synthetase (GS) is an unusual multitasking protein that functions as an enzyme, a transcription coregulator, and a chaperone in ammonium assimilation and in the regulation of genes involved in nitrogen metabolism. It catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia. Feedback-inhibited GlnA interacts with and regulates the activity of the transcriptional regulator TnrA. During nitrogen limitation, TnrA is in its DNA- binding active state and turns on the transcription of genes required for nitrogen assimilation. Under condi [...]

D-Tyr-tRNATyr deacylase; A non-functional D-aminoacyl-tRNA deacylase.

Putative NADH dehydrogenase; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; putative enzyme; Belongs to the complex I subunit 5 family.