Seroatlas · Human Serome Atlas

RPS4Y1

Small ribosomal subunit protein eS4, Y isoform 1

Also known as: MGC119100, MGC5070, RPS4Y, RS4Y1_HUMAN, S4

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

Protein identityUniProt · HPA

UniProt accession
P22090
Gene
RPS4Y1
Ensembl
ENSG00000129824
Chromosome
Y
Canonical length
263 aa
Protein class
Predicted intracellular proteins, Ribosomal proteins

OverviewNCBI Gene

Cytoplasmic ribosomes, organelles that catalyze protein synthesis, consist of a small 40S subunit and a large 60S subunit. Together these subunits are composed of 4 RNA species and approximately 80 structurally distinct proteins. This gene encodes ribosomal protein S4, a component of the 40S subunit. Ribosomal protein S4 is the only ribosomal protein known to be encoded by more than one gene, namely this gene and ribosomal protein S4, X-linked (RPS4X). The 2 isoforms encoded by these genes are not identical, but are functionally equivalent. Ribosomal protein S4 belongs to the S4E family of ribosomal proteins. It has been suggested that haploinsufficiency of the ribosomal protein S4 genes plays a role in Turner syndrome; however, this hypothesis is controversial. As is typical for genes encoding ribosomal proteins, there are multiple processed pseudogenes of this gene dispersed through the genome. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

263 residues, UniProt reviewed canonical sequence.

>P22090|RPS4Y1
     1  MARGPKKHLK RVAAPKHWML DKLTGVFAPR PSTGPHKLRE CLPLIVFLRN RLKYALTGDE
    61  VKKICMQRFI KIDGKVRVDV TYPAGFMDVI SIEKTGEHFR LVYDTKGRFA VHRITVEEAK
   121  YKLCKVRKIT VGVKGIPHLV THDARTIRYP DPVIKVNDTV QIDLGTGKII NFIKFDTGNL
   181  CMVIGGANLG RVGVITNRER HPGSFDVVHV KDANGNSFAT RLSNIFVIGN GNKPWISLPR
   241  GKGIRLTVAE ERDKRLATKQ SSG

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against RPS4Y1 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)
0.3
Highest tissue expression
357 nTPM

Expression across tissuesHPA

Tissue

  • tongue: 357 nTPM
  • pancreas: 304 nTPM
  • kidney: 298 nTPM
  • prostate: 286 nTPM
  • skeletal muscle: 286 nTPM
  • epididymis: 285 nTPM

Single-cell type

  • epididymal efferent duct absorptive cells: 1,345 nCPM
  • epididymal basal cells: 1,215 nCPM
  • epididymal principal cells: 1,040 nCPM
  • gastric chief cells: 821 nCPM
  • migrating cytotrophoblasts: 663 nCPM
  • cytotrophoblasts: 627 nCPM

Immune cell

  • total PBMC: 252 nTPM
  • naive CD4 T-cell: 228 nTPM
  • naive CD8 T-cell: 214 nTPM
  • memory CD4 T-cell: 188 nTPM
  • T-reg: 170 nTPM
  • MAIT T-cell: 169 nTPM

Brain region

  • medulla oblongata: 18 nTPM
  • white matter: 15 nTPM
  • choroid plexus: 14 nTPM
  • hypothalamus: 14 nTPM
  • spinal cord: 14 nTPM
  • pons: 13 nTPM

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)
0.94
gnomAD pLI
0.63
gnomAD missense Z
1.12
DepMap mean gene effect
0.21
DepMap dependency class
none

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of RPS4Y1 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 RPS4Y1 as an antibody target. Whether an autoantibody or antibody against RPS4Y1 could matter depends on whether native RPS4Y1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

RPS4Y1 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 RPS4Y1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/RPS4Y1. 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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