WARS2
Tryptophan--tRNA ligase, mitochondrial
Also known as: mtTrpRS, SYWM_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9UGM6
- Gene
- WARS2
- Ensembl
- ENSG00000116874
- Chromosome
- 1
- Canonical length
- 360 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Potential drug targets, Predicted intracellular proteins
- Subcellular location
- Mitochondria
OverviewNCBI Gene
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. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
360 residues, UniProt reviewed canonical sequence.
>Q9UGM6|WARS2
1 MALHSMRKAR ERWSFIRALH KGSAAAPALQ KDSKKRVFSG IQPTGILHLG NYLGAIESWV
61 RLQDEYDSVL YSIVDLHSIT VPQDPAVLRQ SILDMTAVLL ACGINPEKSI LFQQSQVSEH
121 TQLSWILSCM VRLPRLQHLH QWKAKTTKQK HDGTVGLLTY PVLQAADILL YKSTHVPVGE
181 DQVQHMELVQ DLAQGFNKKY GEFFPVPESI LTSMKKVKSL RDPSAKMSKS DPDKLATVRI
241 TDSPEEIVQK FRKAVTDFTS EVTYDPAGRA GVSNIVAVHA AVTGLSVEEV VRRSAGMNTA
301 RYKLAVADAV IEKFAPIKRE IEKLKLDKDH LEKVLQIGSA KAKELAYTVC QEVKKLVGFLLocalizationUniProt · AlphaFold · HPA
Whether an antibody against WARS2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.29
- Highest tissue expression
- 9.6 nTPM
Expression across tissuesHPA
Tissue
- parathyroid gland: 9.6 nTPM
- kidney: 9 nTPM
- breast: 8.8 nTPM
- fallopian tube: 8.8 nTPM
- adrenal gland: 8.4 nTPM
- choroid plexus: 8.4 nTPM
Single-cell type
- cardiomyocytes: 110 nCPM
- fibro-adipogenic progenitors: 102 nCPM
- choroid plexus epithelial cells: 95 nCPM
- endometrial ciliated cells: 73 nCPM
- alveolar cells type 1: 70 nCPM
- mesothelial cells: 69 nCPM
Immune cell
- myeloid DC: 6.7 nTPM
- naive B-cell: 6.3 nTPM
- classical monocyte: 5 nTPM
- MAIT T-cell: 5 nTPM
- memory B-cell: 4.6 nTPM
- memory CD8 T-cell: 4.5 nTPM
Brain region
- choroid plexus: 14 nTPM
- white matter: 5.8 nTPM
- hypothalamus: 5.4 nTPM
- medulla oblongata: 5.2 nTPM
- midbrain: 5.1 nTPM
- spinal cord: 5 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about WARS2.
Disease | AllUniProt
Conditions WARS2 is implicated in, by any mechanism.
- Neurodevelopmental disorder, mitochondrial, with abnormal movements and lactic acidosis, with or without seizures (NEMMLAS) MIM:617710
- Parkinsonism-dystonia 3, childhood-onset (PKDYS3) MIM:619738
Disease | GeneticClinVar
17 pathogenic / likely-pathogenic of 180 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Neurodevelopmental disorder, mitochondrial, with abnormal movements and lactic acidosis, with or without seizures
- Parkinsonism-dystonia 3, childhood-onset
- WARS2-related disorder
- Inborn genetic diseases
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.67
- gnomAD pLI
- 0.05
- gnomAD missense Z
- 0.9
- DepMap mean gene effect
- -0.44
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- positive regulation of angiogenesis
- tRNA aminoacylation for protein translation
- vasculogenesis
- mitochondrial tryptophanyl-tRNA aminoacylation
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Aminoacyl-tRNA synthetase, class I, conserved site
- Aminoacyl-tRNA synthetase, class Ic
- Tryptophan-tRNA ligase
- Rossmann-like alpha/beta/alpha sandwich fold
- tRNA synthetases class I (W and Y)
- Tryptophan-tRNA ligase, bacterial-type
- Tryptophan--tRNA ligase
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads WARS2 as an antibody target. Whether an autoantibody or antibody against WARS2 could matter depends on whether native WARS2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
WARS2 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label WARS2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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