PDCD4
Programmed cell death protein 4
Also known as: H731, PDCD4_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q53EL6
- Gene
- PDCD4
- Ensembl
- ENSG00000150593
- Chromosome
- 10
- Canonical length
- 469 aa
- Protein class
- Predicted intracellular proteins
- Subcellular location
- Nucleoplasm
OverviewNCBI Gene
This gene is a tumor suppressor and encodes a protein that binds to the eukaryotic translation initiation factor 4A1 and inhibits its function by preventing RNA binding. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2010]
Canonical amino-acid sequenceUniProt
469 residues, UniProt reviewed canonical sequence.
>Q53EL6|PDCD4
1 MDVENEQILN VNPADPDNLS DSLFSGDEEN AGTEEIKNEI NGNWISASSI NEARINAKAK
61 RRLRKNSSRD SGRGDSVSDS GSDALRSGLT VPTSPKGRLL DRRSRSGKGR GLPKKGGAGG
121 KGVWGTPGQV YDVEEVDVKD PNYDDDQENC VYETVVLPLD ERAFEKTLTP IIQEYFEHGD
181 TNEVAEMLRD LNLGEMKSGV PVLAVSLALE GKASHREMTS KLLSDLCGTV MSTTDVEKSF
241 DKLLKDLPEL ALDTPRAPQL VGQFIARAVG DGILCNTYID SYKGTVDCVQ ARAALDKATV
301 LLSMSKGGKR KDSVWGSGGG QQSVNHLVKE IDMLLKEYLL SGDISEAEHC LKELEVPHFH
361 HELVYEAIIM VLESTGESTF KMILDLLKSL WKSSTITVDQ MKRGYERIYN EIPDINLDVP
421 HSYSVLERFV EECFQAGIIS KQLRDLCPSR GRKRFVSEGD GGRLKPESYLocalizationUniProt · AlphaFold · HPA
Whether an antibody against PDCD4 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)
- 0.42
- Highest tissue expression
- 477 nTPM
Expression across tissuesHPA
Tissue
- pancreas: 477 nTPM
- parathyroid gland: 267 nTPM
- salivary gland: 240 nTPM
- colon: 148 nTPM
- thyroid gland: 145 nTPM
- esophagus: 142 nTPM
Single-cell type
- pituicytes/fscs: 1,128 nCPM
- syncytiotrophoblasts: 1,128 nCPM
- salivary acinar cells: 876 nCPM
- lacrimal acinar cells: 770 nCPM
- pancreatic acinar cells: 764 nCPM
- esophageal apical cells: 644 nCPM
Immune cell
- basophil: 186 nTPM
- MAIT T-cell: 96 nTPM
- NK-cell: 85 nTPM
- memory CD8 T-cell: 60 nTPM
- memory B-cell: 54 nTPM
- gdT-cell: 54 nTPM
Brain region
- choroid plexus: 41 nTPM
- midbrain: 28 nTPM
- cerebellum: 26 nTPM
- hypothalamus: 25 nTPM
- white matter: 24 nTPM
- medulla oblongata: 22 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)
- 0.93
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.22
- DepMap mean gene effect
- 0
- 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
- apoptotic process
- BMP signaling pathway
- cellular response to lipopolysaccharide
- epithelial to mesenchymal transition involved in cardiac fibroblast development
- negative regulation of cytokine production involved in inflammatory response
- negative regulation of DNA-templated transcription
- negative regulation of JUN kinase activity
- negative regulation of myofibroblast differentiation
- negative regulation of vascular associated smooth muscle cell differentiation
- negative regulation of vascular associated smooth muscle cell proliferation
- positive regulation of endothelial cell apoptotic process
- positive regulation of inflammatory response
- positive regulation of non-canonical NF-kappaB signal transduction
- positive regulation of vascular associated smooth muscle cell apoptotic process
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Initiation factor eIF-4 gamma, MA3
- Armadillo-type fold
- MA3 domain
- Programmed cell death protein 4
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of PDCD4 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 PDCD4 as an antibody target. Whether an autoantibody or antibody against PDCD4 could matter depends on whether native PDCD4 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
PDCD4 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 PDCD4 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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