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Protein

Peroxiredoxin-4

Gene

PRDX4

Organism
Homo sapiens (Human)
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 and as sensor of hydrogen peroxide-mediated signaling events. Regulates the activation of NF-kappa-B in the cytosol by a modulation of I-kappa-B-alpha phosphorylation.1 Publication

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.1 Publication

Catalytic activityi

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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei124Cysteine sulfenic acid (-SOH) intermediate2 Publications1

GO - Molecular functioni

  • protein homodimerization activity Source: Ensembl
  • thioredoxin peroxidase activity Source: ProtInc

GO - Biological processi

Keywordsi

Molecular functionAntioxidant, Oxidoreductase, Peroxidase

Enzyme and pathway databases

BRENDAi1.11.1.15. 2681.
ReactomeiR-HSA-6798695. Neutrophil degranulation.

Protein family/group databases

PeroxiBasei4530. Hs2CysPrx04.

Names & Taxonomyi

Protein namesi
Recommended name:
Peroxiredoxin-4 (EC:1.11.1.152 Publications)
Alternative name(s):
Antioxidant enzyme AOE372
Short name:
AOE37-2
Peroxiredoxin IV
Short name:
Prx-IV
Thioredoxin peroxidase AO372
Thioredoxin-dependent peroxide reductase A0372
Gene namesi
Name:PRDX4
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome X

Organism-specific databases

HGNCiHGNC:17169. PRDX4.

Subcellular locationi

GO - Cellular componenti

  • cytosol Source: Ensembl
  • extracellular exosome Source: UniProtKB
  • extracellular region Source: Reactome
  • ficolin-1-rich granule lumen Source: Reactome
  • mitochondrion Source: Ensembl
  • nucleus Source: UniProtKB
  • secretory granule lumen Source: Reactome
  • smooth endoplasmic reticulum Source: Ensembl

Keywords - Cellular componenti

Cytoplasm, Endoplasmic reticulum

Pathology & Biotechi

Organism-specific databases

DisGeNETi10549.
OpenTargetsiENSG00000123131.
PharmGKBiPA33725.

Polymorphism and mutation databases

BioMutaiPRDX4.
DMDMi3024727.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 37Combined sources1 PublicationAdd BLAST37
ChainiPRO_000013509838 – 271Peroxiredoxin-4Add BLAST234

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei99N6-succinyllysineBy similarity1
Disulfide bondi124Interchain (with C-245); in linked formCombined sources1 Publication
Disulfide bondi245Interchain (with C-124); in linked formCombined sources1 Publication

Post-translational modificationi

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.2 Publications

Keywords - PTMi

Disulfide bond

Proteomic databases

EPDiQ13162.
PaxDbiQ13162.
PeptideAtlasiQ13162.
PRIDEiQ13162.
TopDownProteomicsiQ13162.

2D gel databases

OGPiQ13162.
REPRODUCTION-2DPAGEiIPI00011937.
UCD-2DPAGEiQ13162.

PTM databases

iPTMnetiQ13162.
PhosphoSitePlusiQ13162.
SwissPalmiQ13162.

Expressioni

Gene expression databases

BgeeiENSG00000123131.
CleanExiHS_PRDX4.
ExpressionAtlasiQ13162. baseline and differential.
GenevisibleiQ13162. HS.

Organism-specific databases

HPAiCAB008659.
CAB027389.
CAB047362.

Interactioni

Subunit structurei

Homodimer; disulfide-linked, upon oxidation (PubMed:9388242). 5 homodimers assemble to form a ring-like decamer (PubMed:21994946). Can form heterodimers with PRDX1 (PubMed:9388242).2 Publications

Binary interactionsi

Show more details

GO - Molecular functioni

Protein-protein interaction databases

BioGridi115800. 57 interactors.
IntActiQ13162. 50 interactors.
MINTiMINT-3027265.
STRINGi9606.ENSP00000368646.

Structurei

Secondary structure

1271
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi75 – 78Combined sources4
Beta strandi89 – 94Combined sources6
Beta strandi97 – 102Combined sources6
Helixi103 – 106Combined sources4
Beta strandi109 – 115Combined sources7
Helixi123 – 133Combined sources11
Helixi135 – 139Combined sources5
Turni140 – 142Combined sources3
Beta strandi143 – 151Combined sources9
Helixi153 – 160Combined sources8
Helixi164 – 166Combined sources3
Beta strandi176 – 178Combined sources3
Beta strandi180 – 182Combined sources3
Helixi183 – 187Combined sources5
Turni193 – 195Combined sources3
Beta strandi196 – 198Combined sources3
Beta strandi200 – 205Combined sources6
Beta strandi209 – 217Combined sources9
Helixi225 – 241Combined sources17
Turni260 – 262Combined sources3
Helixi263 – 267Combined sources5
Turni268 – 270Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2PN8X-ray1.80A/B/C/D/E/F/G/H/I/J84-271[»]
3TJBX-ray2.38A/B/C/D/E38-271[»]
3TJFX-ray2.04A/B/C/D/E38-271[»]
3TJGX-ray2.24A/B/C/D/E38-271[»]
3TJJX-ray1.91A/B/C/D/E38-271[»]
3TJKX-ray2.09A/B/C/D/E38-271[»]
3TKPX-ray2.49A/B/C/D/E38-271[»]
3TKQX-ray2.22A/B/C/D/E38-271[»]
3TKRX-ray2.10A/B/C/D/E/F/G/H/I/J38-271[»]
3TKSX-ray2.40A/B/C/D/E38-271[»]
4RQXX-ray2.26A/B/C/D/E79-271[»]
5HQPX-ray2.60A/B38-271[»]
ProteinModelPortaliQ13162.
SMRiQ13162.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ13162.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini79 – 237ThioredoxinPROSITE-ProRule annotationAdd BLAST159

Sequence similaritiesi

Keywords - Domaini

Redox-active center, Signal

Phylogenomic databases

eggNOGiKOG0852. Eukaryota.
COG0450. LUCA.
GeneTreeiENSGT00390000004653.
HOGENOMiHOG000022343.
HOVERGENiHBG000286.
InParanoidiQ13162.
KOiK03386.
OMAiGWKPGQD.
OrthoDBiEOG091G0IE5.
PhylomeDBiQ13162.
TreeFamiTF105181.

Family and domain databases

InterProiView protein in InterPro
IPR000866. AhpC/TSA.
IPR024706. Peroxiredoxin_AhpC-typ.
IPR019479. Peroxiredoxin_C.
IPR012336. Thioredoxin-like_fold.
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.

Q13162-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEALPLLAAT TPDHGRHRRL LLLPLLLFLL PAGAVQGWET EERPRTREEE
60 70 80 90 100
CHFYAGGQVY PGEASRVSVA DHSLHLSKAK ISKPAPYWEG TAVIDGEFKE
110 120 130 140 150
LKLTDYRGKY LVFFFYPLDF TFVCPTEIIA FGDRLEEFRS INTEVVACSV
160 170 180 190 200
DSQFTHLAWI NTPRRQGGLG PIRIPLLSDL THQISKDYGV YLEDSGHTLR
210 220 230 240 250
GLFIIDDKGI LRQITLNDLP VGRSVDETLR LVQAFQYTDK HGEVCPAGWK
260 270
PGSETIIPDP AGKLKYFDKL N
Length:271
Mass (Da):30,540
Last modified:November 1, 1996 - v1
Checksum:i7E56B580049FC60F
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti12P → S in CAG46469 (PubMed:15489334).Curated1
Sequence conflicti51C → Y in CAG46469 (PubMed:15489334).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U25182 mRNA. Translation: AAB95175.1.
CR541668 mRNA. Translation: CAG46469.1.
CR541705 mRNA. Translation: CAG46506.1.
BC003609 mRNA. Translation: AAH03609.1.
BC007107 mRNA. Translation: AAH07107.1.
BC016770 mRNA. Translation: AAH16770.1.
CCDSiCCDS14206.1.
PIRiG01790.
RefSeqiNP_006397.1. NM_006406.1.
UniGeneiHs.83383.

Genome annotation databases

EnsembliENST00000379341; ENSP00000368646; ENSG00000123131.
GeneIDi10549.
KEGGihsa:10549.

Similar proteinsi

Entry informationi

Entry nameiPRDX4_HUMAN
AccessioniPrimary (citable) accession number: Q13162
Secondary accession number(s): Q6FHT3
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: November 1, 1996
Last modified: August 30, 2017
This is version 174 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Human chromosome X
    Human chromosome X: entries, gene names and cross-references to MIM
  2. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  4. SIMILARITY comments
    Index of protein domains and families