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 LEEEEGVLocalizationUniProt · 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.
- melanoma T cell
- skin melanoma T cell
- acral lentiginous melanoma T cell
- hepatocellular carcinoma T cell
- lung non-small cell carcinoma T cell
- testicular germ cell cancer T cell
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
- negative regulation of apoptotic process
- negative regulation of transcription by RNA polymerase II
- positive regulation of cell cycle
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.
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