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Protein

Thioredoxin-dependent peroxide reductase, mitochondrial

Gene

Prdx3

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

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.By similarity

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.By similarity

Catalytic activityi

2 R'-SH + ROOH = R'-S-S-R' + H2O + ROH.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei109Cysteine sulfenic acid (-SOH) intermediateBy similarity1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionAntioxidant, Oxidoreductase, Peroxidase

Enzyme and pathway databases

BRENDAi1.11.1.15. 5301.

Protein family/group databases

PeroxiBasei4507. Rno2CysPrx03.

Names & Taxonomyi

Protein namesi
Recommended name:
Thioredoxin-dependent peroxide reductase, mitochondrial (EC:1.11.1.15)
Alternative name(s):
PRx III
Peroxiredoxin-3
Short name:
PRX-3
Gene namesi
Name:Prdx3
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Unplaced

Organism-specific databases

RGDi620040. Prdx3.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Mitochondrion

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 62MitochondrionBy similarityAdd BLAST62
ChainiPRO_000025685963 – 257Thioredoxin-dependent peroxide reductase, mitochondrialAdd BLAST195

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei84N6-succinyllysineBy similarity1
Modified residuei92N6-acetyllysine; alternateBy similarity1
Modified residuei92N6-succinyllysine; alternateBy similarity1
Disulfide bondi109Interchain (with C-230); in linked formBy similarity
Disulfide bondi230Interchain (with C-109); in linked formBy similarity

Post-translational modificationi

Phosphorylated by LRRK2; phosphorylation reduces perodixase activity.By similarity
The enzyme can be inactivated by further oxidation of the cysteine sulfenic acid (C(P)-SOH) to sulphinic acid (C(P)-SO2H) and sulphonic acid (C(P)-SO3H) instead of its condensation to a disulfide bond.By similarity

Keywords - PTMi

Acetylation, Disulfide bond, Phosphoprotein

Proteomic databases

PaxDbiQ9Z0V6.
PRIDEiQ9Z0V6.

2D gel databases

World-2DPAGEi0004:Q9Z0V6.

PTM databases

iPTMnetiQ9Z0V6.
PhosphoSitePlusiQ9Z0V6.

Expressioni

Tissue specificityi

Ubiquitous.1 Publication

Interactioni

Subunit structurei

Homodimer; disulfide-linked, upon oxidation. 6 homodimers assemble to form a ring-like dodecamer. Interacts with NEK6. Interacts with LRRK2.By similarity

GO - Molecular functioni

Protein-protein interaction databases

BioGridi249055. 1 interactor.
IntActiQ9Z0V6. 3 interactors.
MINTiMINT-4621394.
STRINGi10116.ENSRNOP00000015186.

Structurei

3D structure databases

ProteinModelPortaliQ9Z0V6.
SMRiQ9Z0V6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini64 – 222ThioredoxinPROSITE-ProRule annotationAdd BLAST159

Sequence similaritiesi

Keywords - Domaini

Redox-active center, Transit peptide

Phylogenomic databases

eggNOGiKOG0852. Eukaryota.
COG0450. LUCA.
HOGENOMiHOG000022343.
HOVERGENiHBG000286.
InParanoidiQ9Z0V6.
KOiK20011.
PhylomeDBiQ9Z0V6.

Family and domain databases

InterProiView protein in InterPro
IPR000866. AhpC/TSA.
IPR024706. Peroxiredoxin_AhpC-typ.
IPR019479. Peroxiredoxin_C.
IPR036249. Thioredoxin-like_sf.
IPR013766. Thioredoxin_domain.
PfamiView protein in Pfam
PF10417. 1-cysPrx_C. 1 hit.
PF00578. AhpC-TSA. 1 hit.
PIRSFiPIRSF000239. AHPC. 1 hit.
SUPFAMiSSF52833. SSF52833. 1 hit.
PROSITEiView protein in PROSITE
PS51352. THIOREDOXIN_2. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q9Z0V6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAAAAGRLLW SSVARPASTI FRSISASTVL RPVASRRTCL TDMLWSACPQ
60 70 80 90 100
AKFAFSTSSS FHTPAVTQHA PHFKGTAVVN GEFKELSLDD FKGKYLVLFF
110 120 130 140 150
YPLDFTFVCP TEIVAFSDKA NEFHDVNCEV VAVSVDSHFS HLAWINTPRK
160 170 180 190 200
NGGLGHMNIT LLSDLTKQIS RDYGVLLESA GIALRGLFII DPNGVIKHLS
210 220 230 240 250
VNDLPVGRSV EEPLRLVKAF QFVETHGEVC PANWTPESPT IKPSPTASKE

YFEKVHQ
Length:257
Mass (Da):28,295
Last modified:October 31, 2006 - v2
Checksum:i752198F5918206AE
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti207 – 216Missing in AAH60567 (PubMed:15489334).Curated10
Sequence conflicti232A → P in AAD17992 (PubMed:10025941).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF106944 mRNA. Translation: AAD17992.1.
BC060567 mRNA. Translation: AAH60567.1.
RefSeqiNP_071985.1. NM_022540.1.
UniGeneiRn.2011.

Genome annotation databases

GeneIDi64371.
KEGGirno:64371.

Similar proteinsi

Entry informationi

Entry nameiPRDX3_RAT
AccessioniPrimary (citable) accession number: Q9Z0V6
Secondary accession number(s): Q6P9W3
Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 31, 2006
Last sequence update: October 31, 2006
Last modified: November 22, 2017
This is version 109 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families