Seroatlas · Human Serome Atlas

SARS1

Serine--tRNA ligase, cytoplasmic

Also known as: SARS, SERS, SYSC_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P49591
Gene
SARS1
Ensembl
ENSG00000031698
Chromosome
1
Canonical length
514 aa
Protein class
Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
Subcellular location
Cytosol
Quaternary structure
Homodimer

OverviewNCBI Gene

This gene belongs to the class II amino-acyl tRNA family. The encoded enzyme catalyzes the transfer of L-serine to tRNA (Ser) and is related to bacterial and yeast counterparts. Multiple alternatively spliced transcript variants have been described but the biological validity of all variants is unknown. [provided by RefSeq, Jul 2010]

Canonical amino-acid sequenceUniProt

514 residues, UniProt reviewed canonical sequence.

>P49591|SARS1
     1  MVLDLDLFRV DKGGDPALIR ETQEKRFKDP GLVDQLVKAD SEWRRCRFRA DNLNKLKNLC
    61  SKTIGEKMKK KEPVGDDESV PENVLSFDDL TADALANLKV SQIKKVRLLI DEAILKCDAE
   121  RIKLEAERFE NLREIGNLLH PSVPISNDED VDNKVERIWG DCTVRKKYSH VDLVVMVDGF
   181  EGEKGAVVAG SRGYFLKGVL VFLEQALIQY ALRTLGSRGY IPIYTPFFMR KEVMQEVAQL
   241  SQFDEELYKV IGKGSEKSDD NSYDEKYLIA TSEQPIAALH RDEWLRPEDL PIKYAGLSTC
   301  FRQEVGSHGR DTRGIFRVHQ FEKIEQFVYS SPHDNKSWEM FEEMITTAEE FYQSLGIPYH
   361  IVNIVSGSLN HAASKKLDLE AWFPGSGAFR ELVSCSNCTD YQARRLRIRY GQTKKMMDKV
   421  EFVHMLNATM CATTRTICAI LENYQTEKGI TVPEKLKEFM PPGLQELIPF VKPAPIEQEP
   481  SKKQKKQHEG SKKKAAARDV TLENRLQNME VTDA

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against SARS1 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)
0.27
Highest tissue expression
141 nTPM

Expression across tissuesHPA

Tissue

  • pancreas: 141 nTPM
  • thyroid gland: 131 nTPM
  • cerebral cortex: 121 nTPM
  • blood vessel: 108 nTPM
  • skeletal muscle: 106 nTPM
  • stomach: 105 nTPM

Single-cell type

  • migrating cytotrophoblasts: 250 nCPM
  • syncytiotrophoblasts: 224 nCPM
  • cytotrophoblasts: 221 nCPM
  • extravillous trophoblasts: 189 nCPM
  • esophageal apical cells: 188 nCPM
  • esophageal suprabasal cells: 185 nCPM

Immune cell

  • total PBMC: 460 nTPM
  • T-reg: 302 nTPM
  • naive B-cell: 254 nTPM
  • naive CD4 T-cell: 247 nTPM
  • MAIT T-cell: 240 nTPM
  • memory CD4 T-cell: 239 nTPM

Brain region

  • cerebral cortex: 139 nTPM
  • hypothalamus: 136 nTPM
  • pons: 131 nTPM
  • white matter: 128 nTPM
  • medulla oblongata: 123 nTPM
  • midbrain: 113 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about SARS1.

Disease | AllUniProt

Conditions SARS1 is implicated in, by any mechanism.

Disease | GeneticClinVar

3 pathogenic / likely-pathogenic of 88 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
0.21
gnomAD pLI
1
DepMap mean gene effect
-2.58
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 SARS1 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 SARS1 as an antibody target. Whether an autoantibody or antibody against SARS1 could matter depends on whether native SARS1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

SARS1 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 SARS1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/SARS1. 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).

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