Article · Wikipedia archive · Last revised Jun 18, 2026

WARS2

Tryptophanyl-tRNA synthetase, mitochondrial is an enzyme that in humans is encoded by the WARS2 gene.

Last revised
Jun 18, 2026
Read time
≈ 3 min
Length
595 w
Citations
13
Source
WARS2
Identifiers
AliasesWARS2, TrpRS, tryptophanyl tRNA synthetase 2, mitochondrial, NEMMLAS, mtTrpRS, PKDYS3
External IDsOMIM: 604733; MGI: 1917810; HomoloGene: 5673; GeneCards: WARS2; OMA:WARS2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_027462

RefSeq (protein)

NP_081738

Location (UCSC)Chr 1: 119.03 – 119.14 MbChr 3: 99.05 – 99.15 Mb
PubMed search34
Wikidata
View/Edit HumanView/Edit Mouse

Tryptophanyl-tRNA synthetase, mitochondrial is an enzyme that in humans is encoded by the WARS2 gene.567

Function

Aminoacyl-tRNA synthetases catalyze the aminoacylation of tRNA by their cognate amino acid. Because of their central role in linking amino acids with nucleotide triplets contained in tRNAs, aminoacyl-tRNA synthetases are thought to be among the first proteins that appeared in evolution. Two forms of tryptophanyl-tRNA synthetase exist, a cytoplasmic form, named WARS, and a mitochondrial form, named WARS2. This gene encodes the mitochondrial tryptophanyl-tRNA synthetase. Two alternative transcripts encoding different isoforms have been described.7 According to recent research, mutations of the mitochondrial form of the enzyme are believed to express two different neurological disorders: A subtype of autosomal recessive intellectual disability and a syndrome of severe infantile‐onset leukoencephalopathy.8

References

References

  1. GRCh38: Ensembl release 89: ENSG00000116874Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000004233Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Martinez-Dominguez MT, Justesen J, Kruse TA, Hansen LL (Mar 1999). "Assignment of the human mitochondrial tryptophanyl-tRNA synthetase (WARS2) to 1p13.3-->p13.1 by radiation hybrid mapping". Cytogenetics and Cell Genetics. 83 (3–4): 249–250. doi:10.1159/000015196. PMID 10072595. S2CID 28931531.
  6. Jorgensen R, Søgaard TM, Rossing AB, Martensen PM, Justesen J (June 2000). "Identification and characterization of human mitochondrial tryptophanyl-tRNA synthetase". The Journal of Biological Chemistry. 275 (22): 16820–16826. doi:10.1074/jbc.275.22.16820. PMID 10828066.
  7. "Entrez Gene: WARS2 tryptophanyl tRNA synthetase 2, mitochondrial".
  8. Burke EA, Frucht SJ, Thompson K, Wolfe LA, Yokoyama T, Bertoni M, et al. (March 2018). "Biallelic mutations in mitochondrial tryptophanyl-tRNA synthetase cause Levodopa-responsive infantile-onset Parkinsonism". Clinical Genetics. 93 (3): 712–718. doi:10.1111/cge.13172. PMC 5828974. PMID 29120065.
Further reading

Further reading

External links