GARS1
Glycine--tRNA ligase
Also known as: CMT2D, DSMAV, GARS, GARS_HUMAN, GlyRS, SMAD1
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P41250
- Gene
- GARS1
- Ensembl
- ENSG00000106105
- Chromosome
- 7
- Canonical length
- 739 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
- Subcellular location
- Cytosol
- Secretome location
- Intracellular and membrane
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene encodes glycyl-tRNA synthetase, one of the aminoacyl-tRNA synthetases that charge tRNAs with their cognate amino acids. The encoded enzyme is an (alpha)2 dimer which belongs to the class II family of tRNA synthetases. It has been shown to be a target of autoantibodies in the human autoimmune diseases, polymyositis or dermatomyositis. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]
Canonical amino-acid sequenceUniProt
739 residues, UniProt reviewed canonical sequence.
>P41250|GARS1
1 MPSPRPVLLR GARAALLLLL PPRLLARPSL LLRRSLSAAS CPPISLPAAA SRSSMDGAGA
61 EEVLAPLRLA VRQQGDLVRK LKEDKAPQVD VDKAVAELKA RKRVLEAKEL ALQPKDDIVD
121 RAKMEDTLKR RFFYDQAFAI YGGVSGLYDF GPVGCALKNN IIQTWRQHFI QEEQILEIDC
181 TMLTPEPVLK TSGHVDKFAD FMVKDVKNGE CFRADHLLKA HLQKLMSDKK CSVEKKSEME
241 SVLAQLDNYG QQELADLFVN YNVKSPITGN DLSPPVSFNL MFKTFIGPGG NMPGYLRPET
301 AQGIFLNFKR LLEFNQGKLP FAAAQIGNSF RNEISPRSGL IRVREFTMAE IEHFVDPSEK
361 DHPKFQNVAD LHLYLYSAKA QVSGQSARKM RLGDAVEQGV INNTVLGYFI GRIYLYLTKV
421 GISPDKLRFR QHMENEMAHY ACDCWDAESK TSYGWIEIVG CADRSCYDLS CHARATKVPL
481 VAEKPLKEPK TVNVVQFEPS KGAIGKAYKK DAKLVMEYLA ICDECYITEM EMLLNEKGEF
541 TIETEGKTFQ LTKDMINVKR FQKTLYVEEV VPNVIEPSFG LGRIMYTVFE HTFHVREGDE
601 QRTFFSFPAV VAPFKCSVLP LSQNQEFMPF VKELSEALTR HGVSHKVDDS SGSIGRRYAR
661 TDEIGVAFGV TIDFDTVNKT PHTATLRDRD SMRQIRAEIS ELPSIVQDLA NGNITWADVE
721 ARYPLFEGQE TGKKETIEELocalizationUniProt · AlphaFold · HPA
Whether an antibody against GARS1 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
- Secreted
- Secreted
- Yes
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.3
- Highest tissue expression
- 75 nTPM
Expression across tissuesHPA
Tissue
- choroid plexus: 75 nTPM
- pancreas: 74 nTPM
- tonsil: 63 nTPM
- esophagus: 56 nTPM
- parathyroid gland: 54 nTPM
- urinary bladder: 50 nTPM
Single-cell type
- cardiomyocytes: 194 nCPM
- esophageal apical cells: 166 nCPM
- erythrocyte progenitors: 155 nCPM
- esophageal suprabasal cells: 153 nCPM
- hepatic stellate cells: 136 nCPM
- plasma cells: 122 nCPM
Immune cell
- non-classical monocyte: 42 nTPM
- basophil: 40 nTPM
- intermediate monocyte: 36 nTPM
- myeloid DC: 36 nTPM
- T-reg: 32 nTPM
- naive CD8 T-cell: 30 nTPM
Brain region
- choroid plexus: 57 nTPM
- cerebral cortex: 51 nTPM
- hypothalamus: 47 nTPM
- thalamus: 44 nTPM
- pons: 39 nTPM
- medulla oblongata: 28 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about GARS1.
Disease | AllUniProt
Conditions GARS1 is implicated in, by any mechanism.
- Charcot-Marie-Tooth disease, axonal, type 2D (CMT2D) MIM:601472
- Neuronopathy, distal hereditary motor, autosomal dominant 5 (HMND5) MIM:600794
- Spinal muscular atrophy, infantile, James type (SMAJI) MIM:619042
Disease | GeneticClinVar
30 pathogenic / likely-pathogenic of 900 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Charcot-Marie-Tooth disease type 2
- Charcot-Marie-Tooth disease type 2D
- Neuronopathy, distal hereditary motor, type 5A
- Charcot-Marie-Tooth disease
- Distal spinal muscular atrophy
Disease | AutoantibodyPubMed
Conditions in which antibodies against GARS1 are reported. Each links to that disease's full target list.
ReferencesPubMed · IEDB
Publications for GARS1 from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.
Reference: AutoantibodyPubMed
7 publications
- Autoantibodies to aminoacyl-transfer RNA synthetases for isoleucine and glycine. Two additional synthetases are antigenic in myositis.
1990 · J Immunol · RCR 4.1 · 145 citations - Autoantibodies to glycyl-transfer RNA synthetase in myositis. Association with dermatomyositis and immunologic heterogeneity.
1996 · Arthritis Rheum · RCR 0.7 · 27 citations - Tofacitinib treatment in anti-glycyl-tRNA synthetase antibody interstitial lung disease - A case report.
2023 · Int J Rheum Dis · RCR 0.6 · 5 citations - Establishment of an ELISA to detect anti-glycyl-tRNA synthetase antibody (anti-EJ), a serological marker of dermatomyositis/polymyositis and interstitial lung disease.
2014 · Clin Chim Acta · RCR 0.4 · 10 citations - Anti-glycyl tRNA synthetase antibody associated interstitial lung disease without symptoms of polymyositis/dermatomyositis.
2014 · Pathol Int · RCR 0.2 · 5 citations
Show 2 more
- Correlation of antisynthetase antibody levels with disease course in a patient with interstitial lung disease and elevated muscle enzymes.
1996 · J Clin Rheumatol · RCR 0.2 · 9 citations - Antisynthetase syndrome with anti-glycyl tRNA synthetase antibodies in a patient with axial spondyloarthritis treated with tumor necrosis factor-α inhibitors.
2025 · Reumatismo
Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.
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)
- 0.4
- gnomAD pLI
- 0.31
- DepMap mean gene effect
- -1.37
- DepMap dependency class
- pan
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 9% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- diadenosine tetraphosphate biosynthetic process
- tRNA aminoacylation for protein translation
- mitochondrial glycyl-tRNA aminoacylation
Molecular functions
- ATP binding
- bis(5'-nucleosyl)-tetraphosphatase (asymmetrical) activity
- identical protein binding
- protein dimerization activity
- ATP:ATP adenylyltransferase activity
- glycine-tRNA ligase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- WHEP-TRS domain
- Aminoacyl-tRNA synthetase, class II (G/ P/ S/T)
- Anticodon-binding
- Aminoacyl-tRNA synthetase, class II
- uS15/NS1, RNA-binding domain superfamily
- Glycyl-tRNA synthetase/DNA polymerase subunit gamma-2
- Anticodon-binding domain superfamily
- Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)
- WHEP-TRS domain
- tRNA synthetase class II core domain (G, H, P, S and T)
- Anticodon binding domain
- Glycyl-tRNA synthetase
- Glycyl-tRNA synthetase-like core domain
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads GARS1 as an antibody target. Whether an autoantibody or antibody against GARS1 could matter depends on whether native GARS1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
GARS1 is annotated as secreted, so native GARS1 circulates and is directly accessible to antibodies. Secreted and cell-surface proteins are the autoantibody targets most likely to act like drugs, blocking or depleting the native protein.
Source-annotated serology context
The source annotations explicitly mention antibody, autoantibody, autoantigen, or autoimmune context. This is biological context, not study-specific reactivity.
- It has been shown to be a target of autoantibodies in the human autoimmune diseases, polymyositis or dermatomyositis.
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