HomeAboutRankingsData Sources
© 2026 GeneE
🧬
GeneE
10 sources retrieved · Most recent: April 2026 · Index updated 15 days ago
ⓘGeneE is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
TRIAP1
TP53 regulated inhibitor of apoptosis 1
Chromosome 12 · 12q24.31
NCBI Gene: 51499Ensembl: ENSG00000170855.5HGNC: HGNC:26937UniProt: O43715
43PubMed Papers
20Diseases
0Drugs
0Pathogenic Variants
FUNCTIONAL ROLE
Transporter
DATA QUALITY
✓ Experimental GO Evidence✓ Swiss-Prot Reviewed
mitotic G1 DNA damage checkpoint signalingphosphatidic acid transfer activityp53 bindingprotein bindingacquired thrombocytopenianasopharyngeal carcinomagestational diabetescancer
✦AI Summary

TRIAP1 (TP53 regulated inhibitor of apoptosis 1) is a mitochondrial protein with dual functions in lipid trafficking and apoptosis suppression. Mechanistically, TRIAP1 forms complexes with PRELID1 and PRELID3A to facilitate phosphatidic acid (PA) transfer across the mitochondrial intermembrane space, enabling cardiolipin synthesis essential for mitochondrial membrane integrity 12. TRIAP1 inhibits intrinsic apoptosis by preventing caspase-9 activation and retaining cytochrome c within mitochondria 34. Its folding is uniquely constrained by functional requirements, involving a redox-controlled pathway where MIA40 catalyzes proper disulfide bond formation to maintain the protein's dual cytosolic and mitochondrial roles 5. Clinically, TRIAP1 dysregulation drives multiple cancers. In colorectal cancer, YY1 transcriptionally activates TRIAP1 to promote proliferation and metastasis 6, while TRIAP1 depletion impairs cancer cell adaptation to glutamine deprivation via p53-mediated stress 7. In osteosarcoma, epirubicin chemosensitivity requires miR-1301-mediated TRIAP1 downregulation 8. TRIAP1 overexpression confers resistance to microtubule-targeting drugs by reducing DNA damage 4. In non-small cell lung cancer, TRIAP1 maintains radioresistance through redox homeostasis regulation 9. TRIAP1 is identified as a prognostic marker in multiple myeloma 10, and exercise-induced mitochondrial immune signaling involves TRIAP1 downregulation 11.

Sources cited
1
Its folding is uniquely constrained by functional requirements, involving a redox-controlled pathway where MIA40 catalyzes proper disulfide bond formation to maintain the protein's dual cytosolic and mitochondrial roles .
PMID: 39909379
2
In colorectal cancer, YY1 transcriptionally activates TRIAP1 to promote proliferation and metastasis , while TRIAP1 depletion impairs cancer cell adaptation to glutamine deprivation via p53-mediated stress .
PMID: 38769122
3
In colorectal cancer, YY1 transcriptionally activates TRIAP1 to promote proliferation and metastasis , while TRIAP1 depletion impairs cancer cell adaptation to glutamine deprivation via p53-mediated stress .
PMID: 36387192
4
In osteosarcoma, epirubicin chemosensitivity requires miR-1301-mediated TRIAP1 downregulation .
PMID: 31433581
5
TRIAP1 inhibits intrinsic apoptosis by preventing caspase-9 activation and retaining cytochrome c within mitochondria , .
PMID: 36917609
6
In non-small cell lung cancer, TRIAP1 maintains radioresistance through redox homeostasis regulation .
PMID: 32096592
7
TRIAP1 is identified as a prognostic marker in multiple myeloma , and exercise-induced mitochondrial immune signaling involves TRIAP1 downregulation .
PMID: 39726602
8
TRIAP1 is identified as a prognostic marker in multiple myeloma , and exercise-induced mitochondrial immune signaling involves TRIAP1 downregulation .
PMID: 40514287
Disease Associationsⓘ20
acquired thrombocytopeniaOpen Targets
0.11Weak
nasopharyngeal carcinomaOpen Targets
0.08Suggestive
gestational diabetesOpen Targets
0.06Suggestive
cancerOpen Targets
0.06Suggestive
neoplasmOpen Targets
0.05Suggestive
osteosarcomaOpen Targets
0.05Suggestive
thyroid cancerOpen Targets
0.05Suggestive
gastric cancerOpen Targets
0.04Suggestive
prostate cancerOpen Targets
0.04Suggestive
adolescent idiopathic scoliosisOpen Targets
0.04Suggestive
non-small cell lung carcinomaOpen Targets
0.03Suggestive
Miyoshi myopathyOpen Targets
0.03Suggestive
breast cancerOpen Targets
0.02Suggestive
multiple myelomaOpen Targets
0.02Suggestive
colorectal cancerOpen Targets
0.02Suggestive
type 2 diabetes mellitusOpen Targets
0.02Suggestive
prostate carcinomaOpen Targets
0.02Suggestive
posterior cortical atrophyOpen Targets
0.01Suggestive
hepatocellular carcinomaOpen Targets
0.01Suggestive
ovarian cancerOpen Targets
0.01Suggestive
Pathogenic Variants
No pathogenic variants reported on ClinVar for this gene.
View on ClinVar ↗
Related Genes
PRELID3AProtein interaction100%PRELID3BProtein interaction99%PRELID1Protein interaction76%MUC1Shared pathway30%PRAP1Shared pathway27%BCL2L12Shared pathway20%
Tissue Expression6 tissues
Liver
100%
Bone Marrow
67%
Heart
46%
Brain
43%
Lung
42%
Ovary
25%
Gene Interaction Network
Click a node to explore
TRIAP1PRELID3APRELID3BPRELID1MUC1PRAP1BCL2L12
PROTEIN STRUCTURE
Preparing viewer…
PDB6I3V · 1.98 Å · X-ray
View on RCSB ↗
Constraintⓘ
LOEUFⓘ
1.70LoF Tolerant
pLIⓘ
0.00Tolerant
Observed/Expected LoF0.95 [0.54–1.70]
RankingsWhere TRIAP1 stands among ~20K protein-coding genes
  • #9,810of 20,598
    Most Researched43
  • #16,094of 17,882
    Most Constrained (LOEUF)1.70
Genes detectedTRIAP1
Sources retrieved10 papers
Response time—
📄 Sources
10▼
1
Mitochondria-associated programmed cell death: elucidating prognostic biomarkers, immune checkpoints, and therapeutic avenues in multiple myeloma.
PMID: 39726602
Front Immunol · 2024
1.00
2
MIA40 circumvents the folding constraints imposed by TRIAP1 function.
PMID: 39909379
J Biol Chem · 2025
0.90
3
The role of USP7-YY1 interaction in promoting colorectal cancer growth and metastasis.
PMID: 38769122
Cell Death Dis · 2024
0.80
4
Relevance of the TRIAP1/p53 axis in colon cancer cell proliferation and adaptation to glutamine deprivation.
PMID: 36387192
Front Oncol · 2022
0.70
5
Triap1 upregulation promotes escape from mitotic-slippage-induced G1 arrest.
PMID: 36917609
Cell Rep · 2023
0.60