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the common name for an enzyme of the class of ligases. As opposed to synthases, synthetases effect condensation reactions, which are accompanied by the decomposition of energy-rich bonds in nucleoside triphosphates, including ATP.

References in periodicals archive ?
L-CAV can be incorporated into a protein instead of L-ARG during ribosomal protein biosynthesis, because the corresponding aa tRNA synthetases do not discriminate between L-CAV and L-ARG.
Physiocrines are derived from aminoacyl tRNA synthetases, which have been known for decades to function intracellularly in protein synthesis.
Glycyl tRNA Synthetase Mutations in Charcot-Marie-Tooth Disease Type 2D and Distal Spinal Muscular Atrophy Type V.
org/content/early/2016/11/23/1617316113) discovered an aminoacyl tRNA synthetase called AlaRS that lacks any new decorations and can somehow still carry out its new role in humans without overhauling its basic architecture.
The recent finding that BMAA is mistaken for serine by tRNA synthetase during; protein formation opens up a plethora of potential new studies in lab models of ALS, from yeast to mice, to see whether the formation of procein aggregates--the classic 'hallmarks' of motor neuron degeneration-- can be replicated," says Brian Dickie, director of research at the Motor Neurone Disease Association.
The expression of most of the tRNA synthetase genes and genes for the TATA-box binding protein-associated factor and histone deacetylase was probably upregulated for enhancing protein synthesis or transcription, respectively.
In comparison, the isoleucyl tRNA synthetase can only discriminate at a level of one to two hundred, but then uses the full power of a protein to edit out valine.
org/, reveals that the prolyl tRNA synthetase from Deinococcaceae groups with the eucaryal and archaeal homologs and not with the typical bacterial prolyl tRNA synthases [ILLUSTRATION FOR FIGURE 1 OMITTED].
However, they are early branching in rRNA, elongation factors, and tRNA synthetase trees
Secondary absence of mitochondria in Giardia lamblia and Trichomonas vaginalis revealed by tRNA synthetase phylogeny.
Although tRNA synthetases are universal and essential components of protein synthesis machinery found in all organisms, human synthetases have naturally occurring resected variants with potent cell signaling activities that are vital to normal functioning of humans.
In addition, selection experiments have demonstrated the relative ease of generating RNA molecules that can interact with tRNA synthetases and other proteins that bind tRNA, and yet do not contain the sequences and structures that signify cellular tRNAs (6, 7; [ILLUSTRATION FOR FIGURE 1 OMITTED]).