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Details on Person UniProt:P32119-2 PRDX2
| Class:Id | ReferenceIsoform:8973029 |
|---|---|
| _chainChangeLog | initiator methionine:1 added on Fri February 17 2017;chain:2-198 added on Fri February 17 2017;initiator methionine:1 for 8973029 removed on Fri Nov 03 2023;initiator methionine: for 8973029 added on Fri Nov 03 2023;initiator methionine: for 8973029 removed on Fri Aug 15 2025;initiator methionine:1 for 8973029 added on Fri Aug 15 2025 |
| _displayName | UniProt:P32119-2 PRDX2 |
| _timestamp | 2025-08-15 21:40:38 |
| chain | initiator methionine:1 chain:2-198 |
| checksum | 1AC781D908B32B46 |
| comment | FUNCTION Thiol-specific peroxidase that catalyzes the reduction of hydrogen peroxide and organic hydroperoxides to water and alcohols, respectively. Plays a role in cell protection against oxidative stress by detoxifying peroxides and as sensor of hydrogen peroxide-mediated signaling events. Might participate in the signaling cascades of growth factors and tumor necrosis factor-alpha by regulating the intracellular concentrations of H(2)O(2).CATALYTIC ACTIVITY a hydroperoxide + [thioredoxin]-dithiol = an alcohol + [thioredoxin]-disulfide + H2OSUBUNIT Homodimer; disulfide-linked, upon oxidation (PubMed:27892488). 5 homodimers assemble to form a ring-like decamer (PubMed:27892488). Interacts with TIPIN (PubMed:17141802).INTERACTION The enzyme can be inactivated by further oxidation of the cysteine sulfenic acid (C(P)-SOH) to sulphinic acid (C(P)-SO2H) instead of its condensation to a disulfide bond. It can be reactivated by forming a transient disulfide bond with sulfiredoxin SRXN1, which reduces the cysteine sulfinic acid in an ATP- and Mg-dependent manner.PTM Acetylation increases resistance to transition to high molecular-mass complexes (PubMed:18606987). Deacetylated by HDAC6 which decreases reducing activity (PubMed:18606987).MISCELLANEOUS The active site is a conserved redox-active cysteine residue, the peroxidatic cysteine (C(P)), which makes the nucleophilic attack on the peroxide substrate. The peroxide oxidizes the C(P)-SH to cysteine sulfenic acid (C(P)-SOH), which then reacts with another cysteine residue, the resolving cysteine (C(R)), to form a disulfide bridge. The disulfide is subsequently reduced by an appropriate electron donor to complete the catalytic cycle. In this typical 2-Cys peroxiredoxin, C(R) is provided by the other dimeric subunit to form an intersubunit disulfide. The disulfide is subsequently reduced by thioredoxin.MISCELLANEOUS Due to intron retention. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay.SIMILARITY Belongs to the peroxiredoxin family. AhpC/Prx1 subfamily. |
| created | [InstanceEdit:8964659] Weiser, JD |
| description | recommendedName: Peroxiredoxin-2 ecNumber evidence="8 9"1.11.1.24 alternativeName: Natural killer cell-enhancing factor B shortName: NKEF-B alternativeName: PRP alternativeName: Thiol-specific antioxidant protein shortName: TSA alternativeName: Thioredoxin peroxidase 1 alternativeName: Thioredoxin-dependent peroxide reductase 1 alternativeName: fullName evidence="12"Thioredoxin-dependent peroxiredoxin 2 |
| geneName | PRDX2 NKEFB TDPX1 |
| identifier | P32119 |
| isoformParent | |
| isSequenceChanged | FALSE |
| keyword | 3D-structure Acetylation Alternative splicing Antioxidant Cytoplasm Direct protein sequencing Disulfide bond Oxidoreductase Peroxidase Phosphoprotein Proteomics identification Redox-active center Reference proteome |
| modified | [InstanceEdit:9836292] Weiser, Joel, 2023-05-25 [InstanceEdit:9852000] Weiser, Joel, 2023-11-03 [InstanceEdit:9926675] Weiser, Joel, 2024-11-03 [InstanceEdit:9939033] Weiser, Joel, 2025-02-21 [InstanceEdit:9948485] Weiser, Joel, 2025-05-21 [InstanceEdit:9963647] Weiser, Joel, 2025-08-15 |
| name | PRDX2 |
| referenceDatabase | [ReferenceDatabase:2] UniProt |
| referenceGene | [ReferenceDNASequence:8958642] ENSEMBL:ENSG00000167815 PRDX2 [Homo sapiens] |
| secondaryIdentifier | PRDX2_HUMAN A8K0C0 P31945 P32118 P35701 Q6FHG4 Q92763 Q9UC23 |
| sequenceLength | 198 |
| species | [Species:48887] Homo sapiens |
| variantIdentifier | P32119-2 |
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No pathways have been reviewed or authored by UniProt:P32119-2 PRDX2 (8973029)
