TIGAR
protein-codingTP53 induced glycolysis regulatory phosphatase, the group of Sugar phosphatases
Gene summary
This gene is regulated as part of the p53 tumor suppressor pathway and encodes a protein with sequence similarity to the bisphosphate domain of the glycolytic enzyme that degrades fructose-2,6-bisphosphate. The protein functions by blocking glycolysis and directing the pathway into the pentose phosphate shunt. Expression of this protein also protects cells from DNA damaging reactive oxygen species and provides some protection from DNA damage-induced apoptosis. The 12p13.32 region that includes this gene is paralogous to the 11q13.3 region. [provided by RefSeq, Jul 2008]
- C12orf5
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~52.3 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to TIGAR variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_020375.3. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 0 | |||||
| missense | 21 | 3 | 24 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 2 | 2 | ||||
| Total | 0 | 0 | 23 | 3 | 0 | 26 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_065108.1 | 6 | MANE Select | |
| Ensembl | ENSP00000179259.4 | 6 | MANE Select | |
| Ensembl | ENSP00000488928.1 | 4 | Standard | |
| Ensembl | ENSP00000488928.1 | 4 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Fructose and mannose metabolism - Homo sapiens (human)
- Central carbon metabolism in cancer - Homo sapiens (human)
- TP53 Regulates Metabolic Genes
- Gene expression (Transcription)
- Generic Transcription Pathway
Biological Process
- response to ischemia
- fructose 2,6-bisphosphate metabolic process
- autophagy
- apoptotic process
- cellular response to DNA damage stimulus
Molecular Function
- bisphosphoglycerate 2-phosphatase activity
- fructose-2,6-bisphosphate 2-phosphatase activity
- protein binding
Cellular Component
- nucleus
- cytoplasm
- mitochondrial outer membrane
- cytosol
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000179259
- Coding exons
- 6
- Length
- 31968
- Individuals with no LoFs
- 125743
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 5
- Defined
- 125748
- p
- 0.0000199
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.39 | 101 | 149 | 0.678 | 0.00000766 | 1770 |
| Missense (PolyPhen) | 8 | 33.316 | 0.24012 | 369 | ||
| Synonymous | 0.546 | 47 | 52.0 | 0.904 | 0.00000294 | 515 |
| Loss of Function | 2.42 | 1 | 8.71 | 0.115 | 3.67e-7 | 112 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0.000047 | 0.000046 | rare |
| European (Non-Finnish) | 0.000027 | 0.000026 | rare |
| South Asian | 0.000033 | 0.000033 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Fructose-bisphosphatase hydrolyzing fructose-2,6- bisphosphate as well as fructose-1,6-bisphosphate (PubMed:19015259). Acts as a negative regulator of glycolysis by lowering intracellular levels of fructose-2,6-bisphosphate in a p53/TP53-dependent manner, resulting in the pentose phosphate pathway (PPP) activation and NADPH production (PubMed:16839880, PubMed:22887998). Contributes to the generation of reduced glutathione to cause a decrease in intracellular reactive oxygen species (ROS) content, correlating with its ability to protect cells from oxidative or metabolic stress-induced cell death (PubMed:16839880, PubMed:19713938, PubMed:23726973, PubMed:22887998, PubMed:23817040). Plays a role in promoting protection against cell death during hypoxia by decreasing mitochondria ROS levels in a HK2-dependent manner through a mechanism that is independent of its fructose-bisphosphatase activity (PubMed:23185017). In response to cardiac damage stress, mediates p53-induced inhibition of myocyte mitophagy through ROS levels reduction and the subsequent inactivation of BNIP3. Reduced mitophagy results in an enhanced apoptotic myocyte cell death, and exacerbates cardiac damage (By similarity). Plays a role in adult intestinal regeneration; contributes to the growth, proliferation and survival of intestinal crypts following tissue ablation (PubMed:23726973). Plays a neuroprotective role against ischemic brain damage by enhancing PPP flux and preserving mitochondria functions (By similarity). Protects glioma cells from hypoxia- and ROS-induced cell death by inhibiting glycolysis and activating mitochondrial energy metabolism and oxygen consumption in a TKTL1- dependent and p53/TP53-independent manner (PubMed:22887998). Plays a role in cancer cell survival by promoting DNA repair through activating PPP flux in a CDK5-ATM-dependent signaling pathway during hypoxia and/or genome stress-induced DNA damage responses (PubMed:25928429). Involved in intestinal tumor progression (PubMed:23726973). {ECO:0000250|UniProtKB:Q8BZA9, ECO:0000269|PubMed:16839880, ECO:0000269|PubMed:19015259, ECO:0000269|PubMed:19713938, ECO:0000269|PubMed:22887998, ECO:0000269|PubMed:23185017, ECO:0000269|PubMed:23726973, ECO:0000269|PubMed:23817040, ECO:0000269|PubMed:25928429}.;
Recessive Scores
- pRec
- 0.103
Intolerance Scores
- RVIS EVS
- -0.03
- RVIS percentile EVS
- 51.4
Essentials
- Essential (gene trap)
- N