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General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.
Gene namei
Official gene symbol, which is typically a short form of the gene name, according to HGNC.
Assigned HPA protein class(es) for the encoded protein(s).
Disease related genes Enzymes Human disease related genes Metabolic proteins Plasma proteins Potential drug targets
Predicted locationi
All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.
Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.
Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).
The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.
Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.
Chromosome
19
Cytoband
p13.3
Chromosome location (bp)
1103982 - 1106791
Number of transcriptsi
Number of protein-coding transcripts from the gene as defined by Ensembl.
Useful information about the protein provided by UniProt.
Essential antioxidant peroxidase that directly reduces phospholipid hydroperoxide even if they are incorporated in membranes and lipoproteins (By similarity). Can also reduce cholesterol hydroperoxide and thymine hydroperoxide (By similarity). Plays a key role in protecting cells from oxidative damage by preventing membrane lipid peroxidation (By similarity). Required to prevent cells from ferroptosis, a non-apoptotic cell death resulting from an iron-dependent accumulation of lipid reactive oxygen species 1. The presence of selenocysteine (Sec) versus Cys at the active site is essential for life: it provides resistance to overoxidation and prevents cells against ferroptosis (By similarity). The presence of Sec at the active site is also essential for the survival of a specific type of parvalbumin-positive interneurons, thereby preventing against fatal epileptic seizures (By similarity). May be required to protect cells from the toxicity of ingested lipid hydroperoxides (By similarity). Required for normal sperm development and male fertility (By similarity). Essential for maturation and survival of photoreceptor cells (By similarity). Plays a role in a primary T-cell response to viral and parasitic infection by protecting T-cells from ferroptosis and by supporting T-cell expansion (By similarity). Plays a role of glutathione peroxidase in platelets in the arachidonic acid metabolism 2. Reduces hydroperoxy ester lipids formed by a 15-lipoxygenase that may play a role as down-regulator of the cellular 15-lipoxygenase pathway (By similarity). Can reduce fatty acid-derived hydroperoxides 3,4. Can also reduce small soluble hydroperoxides such as H2O2, cumene hydroperoxide and tert-butyl hydroperoxide 5,6....show less
Molecular function (UniProt)i
Keywords assigned by UniProt to proteins due to their particular molecular function.
Developmental protein, Oxidoreductase, Peroxidase
Biological process (UniProt)i
Keywords assigned by UniProt to proteins because they are involved in a particular biological process.
Lipid metabolism
Gene summary (Entrez)i
Useful information about the gene from Entrez
The protein encoded by this gene belongs to the glutathione peroxidase family, members of which catalyze the reduction of hydrogen peroxide, organic hydroperoxides and lipid hydroperoxides, and thereby protect cells against oxidative damage. Several isozymes of this gene family exist in vertebrates, which vary in cellular location and substrate specificity. This isozyme has a high preference for lipid hydroperoxides and protects cells against membrane lipid peroxidation and cell death. It is also required for normal sperm development; thus, it has been identified as a 'moonlighting' protein because of its ability to serve dual functions as a peroxidase, as well as a structural protein in mature spermatozoa. Mutations in this gene are associated with Sedaghatian type of spondylometaphyseal dysplasia (SMDS). This isozyme is also a selenoprotein, containing the rare amino acid selenocysteine (Sec) at its active site. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. Transcript variants resulting from alternative splicing or use of alternate promoters have been described to encode isoforms with different subcellular localization. [provided by RefSeq, Dec 2018]...show less
PROTEIN INFORMATIONi
The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.
The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.
The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.
The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Enzymes ENZYME proteins Oxidoreductases Metabolic proteins MEMSAT3 predicted membrane proteins Secreted proteins predicted by MDSEC SignalP predicted secreted proteins Phobius predicted secreted proteins SPOCTOPUS predicted secreted proteins DeepSig predicted secreted proteins Predicted intracellular proteins Plasma proteins Disease related genes Potential drug targets Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
Enzymes ENZYME proteins Oxidoreductases Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Plasma proteins Disease related genes Potential drug targets Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
Metabolic proteins MEMSAT3 predicted membrane proteins Secreted proteins predicted by MDSEC Phobius predicted secreted proteins SPOCTOPUS predicted secreted proteins DeepSig predicted secreted proteins Predicted intracellular proteins Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
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GO:0004602[glutathione peroxidase activity] GO:0006979[response to oxidative stress]
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
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GO:0004602[glutathione peroxidase activity] GO:0006979[response to oxidative stress]
Q6PJX4 [Target identity:100%; Query identity:100%] GPX4 protein
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Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Congenital malformations Congenital malformations of the musculoskeletal system Protein evidence (Ezkurdia et al 2014)
The Human Protein Atlas project is funded
