Seroatlas · Human Serome Atlas

CARS1

Cysteine--tRNA ligase, cytoplasmic

Also known as: CARS, SYCC_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
P49589
Gene
CARS1
Ensembl
ENSG00000110619
Chromosome
11
Canonical length
748 aa
Protein class
Cancer-related genes, Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Potential drug targets, Predicted intracellular proteins
Subcellular location
Cytosol
Quaternary structure
Homodimer

OverviewNCBI Gene

This gene encodes a class 1 aminoacyl-tRNA synthetase, cysteinyl-tRNA synthetase. Each of the twenty aminoacyl-tRNA synthetases catalyzes the aminoacylation of a specific tRNA or tRNA isoaccepting family with the cognate amino acid. This gene is one of several located near the imprinted gene domain on chromosome 11p15.5, an important tumor-suppressor gene region. Alterations in this region have been associated with Beckwith-Wiedemann syndrome, Wilms tumor, rhabdomyosarcoma, adrenocortical carcinoma, and lung, ovarian and breast cancers. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Aug 2010]

Canonical amino-acid sequenceUniProt

748 residues, UniProt reviewed canonical sequence.

>P49589|CARS1
     1  MADSSGQQGK GRRVQPQWSP PAGTQPCRLH LYNSLTRNKE VFIPQDGKKV TWYCCGPTVY
    61  DASHMGHARS YISFDILRRV LKDYFKFDVF YCMNITDIDD KIIKRARQNH LFEQYREKRP
   121  EAAQLLEDVQ AALKPFSVKL NETTDPDKKQ MLERIQHAVQ LATEPLEKAV QSRLTGEEVN
   181  SCVEVLLEEA KDLLSDWLDS TLGCDVTDNS IFSKLPKFWE GDFHRDMEAL NVLPPDVLTR
   241  VSEYVPEIVN FVQKIVDNGY GYVSNGSVYF DTAKFASSEK HSYGKLVPEA VGDQKALQEG
   301  EGDLSISADR LSEKRSPNDF ALWKASKPGE PSWPCPWGKG RPGWHIECSA MAGTLLGASM
   361  DIHGGGFDLR FPHHDNELAQ SEAYFENDCW VRYFLHTGHL TIAGCKMSKS LKNFITIKDA
   421  LKKHSARQLR LAFLMHSWKD TLDYSSNTME SALQYEKFLN EFFLNVKDIL RAPVDITGQF
   481  EKWGEEEAEL NKNFYDKKTA IHKALCDNVD TRTVMEEMRA LVSQCNLYMA ARKAVRKRPN
   541  QALLENIALY LTHMLKIFGA VEEDSSLGFP VGGPGTSLSL EATVMPYLQV LSEFREGVRK
   601  IAREQKVPEI LQLSDALRDN ILPELGVRFE DHEGLPTVVK LVDRNTLLKE REEKRRVEEE
   661  KRKKKEEAAR RKQEQEAAKL AKMKIPPSEM FLSETDKYSK FDENGLPTHD MEGKELSKGQ
   721  AKKLKKLFEA QEKLYKEYLQ MAQNGSFQ

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against CARS1 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)
0.28
Highest tissue expression
31 nTPM

Expression across tissuesHPA

Tissue

  • pancreas: 31 nTPM
  • skeletal muscle: 30 nTPM
  • skin: 23 nTPM
  • stomach: 22 nTPM
  • adipose tissue: 21 nTPM
  • cerebral cortex: 21 nTPM

Single-cell type

  • late primary spermatocytes: 101 nCPM
  • early spermatids: 92 nCPM
  • renal collecting duct intercalated cells: 53 nCPM
  • respiratory ciliated cells: 49 nCPM
  • late spermatids: 48 nCPM
  • oligodendrocytes: 45 nCPM

Immune cell

  • non-classical monocyte: 38 nTPM
  • T-reg: 27 nTPM
  • neutrophil: 26 nTPM
  • NK-cell: 24 nTPM
  • gdT-cell: 21 nTPM
  • myeloid DC: 19 nTPM

Brain region

  • white matter: 18 nTPM
  • cerebral cortex: 18 nTPM
  • pons: 17 nTPM
  • thalamus: 15 nTPM
  • hypothalamus: 15 nTPM
  • midbrain: 15 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about CARS1.

Disease | AllUniProt

Conditions CARS1 is implicated in, by any mechanism.

Disease | GeneticClinVar

7 pathogenic / likely-pathogenic of 215 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

ReferencesPubMed · IEDB

Publications for CARS1 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.

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)
0.49
gnomAD pLI
0
DepMap mean gene effect
-1.64
DepMap dependency class
pan

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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of CARS1 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads CARS1 as an antibody target. Whether an autoantibody or antibody against CARS1 could matter depends on whether native CARS1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

CARS1 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 CARS1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/CARS1. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

Loading the interactive Seroatlas protein explorer...