Tryptophanyl-tRNA synthetase, cytoplasmic is an aminoacyl-tRNA synthetase enzyme that attaches the amino acid tryptophan to its cognate tRNA. In humans, it is encoded by the WARS gene. [5] [6] [7]
Two forms of tryptophanyl-tRNA synthetase exist, a cytoplasmic form, named WARS, and a mitochondrial form, named WARS2. Tryptophanyl-tRNA synthetase (WARS) catalyzes the aminoacylation of tRNA(trp) with tryptophan and is induced by interferon. Tryptophanyl-tRNA synthetase belongs to the class I tRNA synthetase family. Four transcript variants encoding two different isoforms have been found for this gene. [7]
Although WARS1 classically aminoacylates tryptophan, during states tryptophan depeletion, this enzyme has been observed to activate both tryptophan and phenylalanine [8] .
An aminoacyl-tRNA synthetase, also called tRNA-ligase, is an enzyme that attaches the appropriate amino acid onto its corresponding tRNA. It does so by catalyzing the transesterification of a specific cognate amino acid or its precursor to one of all its compatible cognate tRNAs to form an aminoacyl-tRNA. In humans, the 20 different types of aa-tRNA are made by the 20 different aminoacyl-tRNA synthetases, one for each amino acid of the genetic code.
Eukaryotic translation termination factor 1 (eRF1), also known as TB3-1, is a protein that in humans is encoded by the ETF1 gene.
Elongation factor 1-delta is a protein that in humans is encoded by the EEF1D gene.
2'-5'-oligoadenylate synthetase 1 is an enzyme that in humans is encoded by the OAS1 gene.
Glycine—tRNA ligase also known as glycyl–tRNA synthetase is an enzyme that in humans is encoded by the GARS1 gene.
In enzymology, a tryptophan-tRNA ligase is an enzyme that catalyzes the chemical reaction
Tyrosyl-tRNA synthetase, cytoplasmic, also known as Tyrosine-tRNA ligase, is an enzyme that in humans is encoded by the YARS gene.
Bifunctional aminoacyl-tRNA synthetase is an enzyme that in humans is encoded by the EPRS gene.
Histidyl-tRNA synthetase (HARS) also known as histidine-tRNA ligase, is an enzyme which in humans is encoded by the HARS gene.
Aspartyl-tRNA synthetase, cytoplasmic is an enzyme that in humans is encoded by the DARS gene.
Aminoacyl tRNA synthetase complex-interacting multifunctional protein 2 is an enzyme that in humans is encoded by the AIMP2 gene.
Methionyl-tRNA synthetase, cytoplasmic is an enzyme that in humans is encoded by the MARS gene.
Valyl-tRNA synthetase is an enzyme that in humans is encoded by the VARS gene.
2'-5'-oligoadenylate synthetase 2 is an enzyme that in humans is encoded by the OAS2 gene.
Isoleucyl-tRNA synthetase, cytoplasmic is an enzyme that in humans is encoded by the IARS1 gene.
59 kDa 2'-5'-oligoadenylate synthetase-like protein is an enzyme that in humans is encoded by the OASL gene.
Tryptophanyl-tRNA synthetase, mitochondrial is an enzyme that in humans is encoded by the WARS2 gene.
2'-5'-oligoadenylate synthetase 3 is an enzyme that in humans is encoded by the OAS3 gene.
Probable histidyl-tRNA synthetase, mitochondrial is an enzyme that in humans is encoded by the HARS2 gene.
In molecular biology, the protein domain WHEP-TRS refers to helix-turn-helix domains. They are found in variable numbers in a particularly common protein, named, glutamyl-prolyl tRNA synthetase(EPRS). This protein domain has an important function in protein–protein interactions between synthetases. WHEP domains exhibit high-affinity interactions with tRNA, indicating a putative evolutionary relationship to facilitate tRNA binding to fused synthetases, thereby enhancing catalytic efficiency.