Seroatlas · Human Serome Atlas

MAGEA4

Melanoma-associated antigen 4

Also known as: CT1.4, MAGA4_HUMAN, MAGE-41, MAGE-X2, MAGE4, MAGE4A, MAGE4B, MGC21336

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

Protein identityUniProt · HPA

UniProt accession
P43358
Gene
MAGEA4
Ensembl
ENSG00000147381
Chromosome
X
Canonical length
317 aa
Protein class
Cancer-related genes, Predicted intracellular proteins, Predicted membrane proteins
Subcellular location
Nuclear speckles,Cytosol

OverviewNCBI Gene

This gene is a member of the MAGEA gene family. The members of this family encode proteins with 50 to 80% sequence identity to each other. The promoters and first exons of the MAGEA genes show considerable variability, suggesting that the existence of this gene family enables the same function to be expressed under different transcriptional controls. The MAGEA genes are clustered at chromosomal location Xq28. They have been implicated in some hereditary disorders, such as dyskeratosis congenita. Several variants encoding the same protein have been found for this gene. [provided by RefSeq, Aug 2020]

Canonical amino-acid sequenceUniProt

317 residues, UniProt reviewed canonical sequence.

>P43358|MAGEA4
     1  MSSEQKSQHC KPEEGVEAQE EALGLVGAQA PTTEEQEAAV SSSSPLVPGT LEEVPAAESA
    61  GPPQSPQGAS ALPTTISFTC WRQPNEGSSS QEEEGPSTSP DAESLFREAL SNKVDELAHF
   121  LLRKYRAKEL VTKAEMLERV IKNYKRCFPV IFGKASESLK MIFGIDVKEV DPASNTYTLV
   181  TCLGLSYDGL LGNNQIFPKT GLLIIVLGTI AMEGDSASEE EIWEELGVMG VYDGREHTVY
   241  GEPRKLLTQD WVQENYLEYR QVPGSNPARY EFLWGPRALA ETSYVKVLEH VVRVNARVRI
   301  AYPSLREAAL LEEEEGV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against MAGEA4 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)
0.41
Highest tissue expression
21 nTPM

Expression across tissuesHPA

Tissue

  • testis: 21 nTPM
  • placenta: 4.5 nTPM
  • lymph node: 0.5 nTPM
  • adipose tissue: 0.1 nTPM
  • cerebral cortex: 0.1 nTPM
  • endometrium: 0.1 nTPM

Single-cell type

  • differentiating spermatogonia: 223 nCPM
  • undifferentiated spermatogonia: 128 nCPM
  • early primary spermatocytes: 74 nCPM
  • syncytiotrophoblasts: 38 nCPM
  • migrating cytotrophoblasts: 21 nCPM
  • extravillous trophoblasts: 19 nCPM

Immune cell

  • basophil: 0 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • gdT-cell: 0 nTPM
  • intermediate monocyte: 0 nTPM
  • MAIT T-cell: 0 nTPM

Brain region

  • amygdala: 0 nTPM
  • basal ganglia: 0 nTPM
  • cerebellum: 0 nTPM
  • cerebral cortex: 0 nTPM
  • choroid plexus: 0 nTPM
  • hippocampal formation: 0 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about MAGEA4.

Disease | ImmuneIEDB

Conditions an epitope on MAGEA4 was assayed in.

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 missense Z
-1.54
DepMap mean gene effect
0.07
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% 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 MAGEA4 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 MAGEA4 as an antibody target. Whether an autoantibody or antibody against MAGEA4 could matter depends on whether native MAGEA4 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

MAGEA4 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 MAGEA4 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/MAGEA4. 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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