EC Number |
Reaction |
Reference |
---|
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
also N-acetyl-alpha-D-glucosamine 1-phosphate + UTP = UDP-N-acetyl-D-glucosamine + diphosphate |
-, 687124 |
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
both reactions of bifunctional GlmU follow Michaelis Menten ordered bi-bi mechanism involving an obligatory order of binding of substrates to the enzyme |
720872 |
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
substrate recognition, and catalytic mechanism for acetyltransfer involving His374, Asn397 and Ala391, overview |
720042 |
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
the 2-amino group of glucosamine-1-phosphate is positioned in proximity to the acetyl-CoA to facilitate direct attack on its thioester by a ternary complex mechanism |
677026 |
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
the catalytic mechanism is a SN2, bimolecular nucleophilic substitution reaction, catalyzed by the C-terminal domain. His374 and Asn397 act as catalytic residues by enhancing the nucleophilicity of the attacking amino group of glucosamine 1-phosphate. Ser416 and Trp460, on a short helix, provide important interactions for substrate binding |
720042 |
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
the enzyme from several bacteria (e.g., Escherichia coli, Bacillus subtilis and Haemophilus influenzae) has been shown to be bifunctional and also to possess the activity of EC 2.7.7.23, UDP-N-acetylglucosamine diphosphorylase |
-, 288685 |
2.3.1.157 | acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + N-acetyl-alpha-D-glucosamine 1-phosphate |
the multifunctional enzyme from Sulfolobus tokodaii {7} is also active with acetyl-CoA + alpha-D-galactosamine 1-phosphate (galactosamine-1-phosphate N-acetyltransferase), UTP + N-acetylglucosamine 1-phosphate (EC 2.7.7.23, UDP-N-acetylglucosamine diphosphorylase) and UTP + N-acetyl-alpha-D-galactosamine 1-phosphate (EC 2.7.7.83, UDP-N-acetylgalactosamine diphosphorylase) |
-, 725249 |