Quinone oxidoreductase PIG3 (TP53I3)
The protein contains 332 amino acids for an estimated molecular weight of 35536 Da.
May be involved in the generation of reactive oxygen species (ROS). Has low NADPH-dependent beta-naphthoquinone reductase activity, with a preference for 1,2-beta-naphthoquinone over 1,4-beta-naphthoquinone. Has low NADPH-dependent diamine reductase activity (in vitro). (updated: Jan. 7, 2015)
Protein identification was indicated in the following studies:
- Goodman and co-workers. (2013) The proteomics and interactomics of human erythrocytes. Exp Biol Med (Maywood) 238(5), 509-518.
- Lange and co-workers. (2014) Annotating N termini for the human proteome project: N termini and Nα-acetylation status differentiate stable cleaved protein species from degradation remnants in the human erythrocyte proteome. J Proteome Res. 13(4), 2028-2044.
- Hegedűs and co-workers. (2015) Inconsistencies in the red blood cell membrane proteome analysis: generation of a database for research and diagnostic applications. Database (Oxford) 1-8.
- D'Alessandro and co-workers. (2017) Red blood cell proteomics update: is there more to discover? Blood Transfus. 15(2), 182-187.
- Bryk and co-workers. (2017) Quantitative Analysis of Human Red Blood Cell Proteome. J Proteome Res. 16(8), 2752-2761.
Methods
The following articles were analysed to gather the proteome content of erythrocytes.
The gene or protein list provided in the studies were processed using the ID mapping API of Uniprot in September 2018. The number of proteins identified and mapped without ambiguity in these studies is indicated below.
Only Swiss-Prot entries (reviewed) were considered for protein evidence assignation.
| Publication | Identification 1 | Uniprot mapping 2 | Not mapped / Obsolete | TrEMBL | Swiss-Prot |
|---|---|---|---|---|---|
| Goodman (2013) | 2289 (gene list) | 2278 | 53 | 20599 | 2269 |
| Lange (2014) | 1234 | 1234 | 7 | 28 | 1224 |
| Hegedus (2015) | 2638 | 2622 | 0 | 235 | 2387 |
| Wilson (2016) | 1658 | 1528 | 170 | 291 | 1068 |
| d'Alessandro (2017) | 1826 | 1817 | 2 | 0 | 1815 |
| Bryk (2017) | 2090 | 2060 | 10 | 108 | 1942 |
| Chu (2018) | 1853 | 1804 | 55 | 362 | 1387 |
1 as available in the article and/or in supplementary material
2 uniprot mapping returns all protein isoforms as one entry
The compilation of older studies can be retrieved from the Red Blood Cell Collection database.
The data and differentiation stages presented below come from the proteomic study and analysis performed by our partners of the GReX consortium, more details are available in their published work.
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| Variant | Description |
|---|---|
| a breast cancer sample | |
| dbSNP:rs35176319 |
The reference OMIM entry for this protein is 605171
Tumor protein p53-inducible protein 3; tp53i3
P53-induced gene 3; pig3
CLONING
DNA damage and/or hyperproliferative signals activate wildtype p53 tumor suppressor protein (TP53; 191170), inducing cell cycle arrest or apoptosis. Mutations that inactivate p53 occur in 50% of all tumors. Polyak et al. (1997) used serial analysis of gene expression (SAGE) to evaluate cellular mRNA levels in a colorectal cancer cell line transfected with p53. Of 7,202 transcripts identified, only 14 were expressed at levels more than 10-fold higher in p53-expressing cells than in control cells. Polyak et al. (1997) termed these genes 'p53-induced genes,' or PIGs, several of which were predicted to encode redox-controlling proteins. They noted that reactive oxygen species (ROS) are potent inducers of apoptosis. Flow cytometric analysis showed that p53 expression induces ROS production, which increases as apoptosis progresses under some conditions. The authors stated that the PIG3 gene encodes a quinone oxidoreductase homolog (see 123691).MAPPING
By analysis of a BAC clone, Polyak et al. (1997) mapped the PIG3 gene to 2p.GENE FUNCTION
The gene PIG3 is induced by the tumor suppressor p53 but not by p53 mutants unable to induce apoptosis, suggesting its involvement in p53-mediated cell death. Contente et al. (2002) showed that p53 directly binds and activates the PIG3 promoter, but not through the DNA element described by Polyak et al. (1997). Instead, p53 interacts with a pentanucleotide microsatellite sequence within the PIG3 promoter (TGYCC)n where Y = C or T. Despite its limited similarity to the p53-binding consensus, this sequence is necessary and sufficient for transcriptional activation of the PIG3 promoter by p53 and binds specifically to p53 in vitro and in vivo. In a population of 117 healthy donors from Germany, the microsatellite was found to be polymorphic, the number of pentanucleotide repeats being 10, 15, 16, or 17, and the frequency of alleles 5.1%, 62.0%, 21.4%, and 11.5%, respectively. The number of repeats directly correlated with the extent of transcriptional activation by p53. This was the first time that a microsatellite had been shown to mediate the induction of a promoter through direct interaction with a transcription factor. Moreover, this sequence of PIG3 was the first p53-responsive element found to be polymorphic. Contente et al. (2002) suggested that inheritance of this microsatellite may affect an individual's susceptibility to cancer. ... More on the omim web site
Feb. 2, 2018: Protein entry updated
Automatic update: Uniprot description updated
Dec. 19, 2017: Protein entry updated
Automatic update: Uniprot description updated
March 16, 2016: Protein entry updated
Automatic update: OMIM entry 605171 was added.
Jan. 28, 2016: Protein entry updated
Automatic update: model status changed
Jan. 25, 2016: Protein entry updated
Automatic update: model status changed