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Asparagine synthetase (or aspartate-ammonia ligase) is a chiefly cytoplasmic enzyme that generates asparagine from aspartate. [1] This amidation reaction is similar to that promoted by glutamine synthetase. The enzyme is ubiquitous in its distribution in mammalian organs, but basal expression is relatively low in tissues other than the exocrine ...
Asparagine synthase (glutamine-hydrolysing) (EC 6.3.5.4, asparagine synthetase (glutamine-hydrolysing), glutamine-dependent asparagine synthetase, asparagine synthetase B, AS, AS-B) is an enzyme with systematic name L-aspartate:L-glutamine amido-ligase (AMP-forming).
Asparagine synthetase uses ATP to activate aspartate, forming β-aspartyl-AMP. Glutamine donates an ammonium group, which reacts with β-aspartyl-AMP to form asparagine and free AMP. [21] The biosynthesis of asparagine from oxaloacetate. In reaction that is the reverse of its biosynthesis, asparagine is hydrolyzed to aspartate by asparaginase ...
Asparagine synthetase: Amino acid synthesis [7] [13] Pharmacology. DON is a cytotoxic inhibitor of many enzymes of nucleotide synthesis.
The enzyme asparagine synthetase produces asparagine, AMP, glutamate, and pyrophosphate from aspartate, glutamine, and ATP. In the asparagine synthetase reaction, ATP is used to activate aspartate, forming β-aspartyl-AMP. Glutamine donates an ammonium group, which reacts with β-aspartyl-AMP to form asparagine and free AMP.
The synthetases specific for alanine, asparagine, aspartic acid, glycine, histidine, lysine, phenylalanine, proline, serine, and threonine belong to class-II synthetases. [ 7 ] Human proteins containing this domain
The systematic name of this enzyme class is L-asparagine:tRNAAsn ligase (AMP-forming). Other names in common use include asparaginyl-tRNA synthetase , asparaginyl-transfer ribonucleate synthetase , asparaginyl transfer RNA synthetase , asparaginyl transfer ribonucleic acid synthetase , asparagyl-transfer RNA synthetase , and asparagine translase .
In enzymology, an asparaginyl-tRNA synthase (glutamine-hydrolysing) (EC 6.3.5.6) is an enzyme that catalyzes the chemical reaction. ATP + aspartyl-tRNA Asn + L-glutamine ADP + phosphate + asparaginyl-tRNA Asn + L-glutamate
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