ID PRDX3_RAT Reviewed; 257 AA. AC Q9Z0V6; Q6P9W3; DT 31-OCT-2006, integrated into UniProtKB/Swiss-Prot. DT 31-OCT-2006, sequence version 2. DT 25-NOV-2008, entry version 47. DE RecName: Full=Thioredoxin-dependent peroxide reductase, mitochondrial; DE EC=1.11.1.15; DE AltName: Full=Peroxiredoxin-3; DE Short=PRX-3; DE AltName: Full=PRx III; DE Flags: Precursor; GN Name=Prdx3; OS Rattus norvegicus (Rat). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; OC Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Sciurognathi; OC Muroidea; Muridae; Murinae; Rattus. OX NCBI_TaxID=10116; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA], AND TISSUE SPECIFICITY. RC TISSUE=Kidney; RX MEDLINE=99148808; PubMed=10025941; DOI=10.1016/S0014-5793(98)01736-0; RA Matsumoto A., Okado A., Fujii T., Fujii J., Egashira M., Niikawa N., RA Taniguchi N.; RT "Cloning of the peroxiredoxin gene family in rats and characterization RT of the fourth member."; RL FEBS Lett. 443:246-250(1999). RN [2] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. RX PubMed=15489334; DOI=10.1101/gr.2596504; RG The MGC Project Team; RT "The status, quality, and expansion of the NIH full-length cDNA RT project: the Mammalian Gene Collection (MGC)."; RL Genome Res. 14:2121-2127(2004). RN [3] RP PROTEIN SEQUENCE OF 171-208; 172-197 AND 209-239, AND MASS RP SPECTROMETRY. RC STRAIN=Sprague-Dawley; TISSUE=Spinal cord; RA Lubec G., Afjehi-Sadat L.; RL Submitted (NOV-2006) to UniProtKB. CC -!- FUNCTION: Involved in redox regulation of the cell. Protects CC radical-sensitive enzymes from oxidative damage by a radical- CC generating system. Acts synergistically with MAP3K13 to regulate CC the activation of NF-kappa-B in the cytosol (By similarity). CC -!- CATALYTIC ACTIVITY: 2 R'-SH + ROOH = R'-S-S-R' + H(2)O + ROH. CC -!- SUBUNIT: Homodimer; disulfide-linked, upon oxidation (By CC similarity). Binds MAP3K13 (By similarity). CC -!- SUBCELLULAR LOCATION: Mitochondrion (By similarity). CC -!- TISSUE SPECIFICITY: Ubiquitous. CC -!- MISCELLANEOUS: The active site is the redox-active Cys-109 CC oxidized to Cys-SOH. Cys-SOH rapidly reacts with Cys-230-SH of the CC other subunit to form an intermolecular disulfide with a CC concomitant homodimer formation. The enzyme may be subsequently CC regenerated by reduction of the disulfide by thioredoxin (By CC similarity). CC -!- MISCELLANEOUS: Irreversibly inactivated by overoxidation of Cys- CC 109 (to Cys-SO(3)H) upon oxidative stress (By similarity). CC -!- SIMILARITY: Belongs to the ahpC/TSA family. CC -!- SIMILARITY: Contains 1 thioredoxin domain. CC ----------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution-NoDerivs License CC ----------------------------------------------------------------------- DR EMBL; AF106944; AAD17992.1; -; mRNA. DR EMBL; BC060567; AAH60567.1; -; mRNA. DR RefSeq; NP_071985.1; -. DR UniGene; Rn.2011; -. DR HSSP; P32119; 1QMV. DR SMR; Q9Z0V6; 64-224. DR PeroxiBase; 4507; Rno2CysPrx03. DR Ensembl; ENSRNOG00000010958; Rattus norvegicus. DR GeneID; 64371; -. DR KEGG; rno:64371; -. DR RGD; 620040; Prdx3. DR HOVERGEN; Q9Z0V6; -. DR NextBio; 613116; -. DR ArrayExpress; Q9Z0V6; -. DR GermOnline; ENSRNOG00000010958; Rattus norvegicus. DR GO; GO:0005739; C:mitochondrion; IEA:UniProtKB-KW. DR GO; GO:0051920; F:peroxiredoxin activity; IEA:EC. DR GO; GO:0045454; P:cell redox homeostasis; IEA:InterPro. DR GO; GO:0055114; P:oxidation reduction; IEA:UniProtKB-KW. DR InterPro; IPR000866; AhpC-TSA. DR InterPro; IPR012335; Thioredoxin_fold. DR Gene3D; G3DSA:3.40.30.10; Thioredoxin_fold; 1. DR Pfam; PF00578; AhpC-TSA; 1. DR PROSITE; PS51352; THIOREDOXIN_2; 1. PE 1: Evidence at protein level; KW Antioxidant; Direct protein sequencing; Mitochondrion; Oxidoreductase; KW Peroxidase; Redox-active center; Transit peptide. FT TRANSIT 1 62 Mitochondrion (By similarity). FT CHAIN 63 257 Thioredoxin-dependent peroxide reductase, FT mitochondrial (By similarity). FT /FTId=PRO_0000256859. FT DOMAIN 64 222 Thioredoxin. FT ACT_SITE 109 109 Cysteine sulfenic acid (-SOH) FT intermediate (By similarity). FT DISULFID 109 109 Interchain (with C-229); in linked form FT (By similarity). FT DISULFID 230 230 Interchain (with C-108); in linked form FT (By similarity). FT CONFLICT 207 216 Missing (in Ref. 2; AAH60567). FT CONFLICT 232 232 A -> P (in Ref. 1; AAD17992). SQ SEQUENCE 257 AA; 28295 MW; 752198F5918206AE CRC64; MAAAAGRLLW SSVARPASTI FRSISASTVL RPVASRRTCL TDMLWSACPQ AKFAFSTSSS FHTPAVTQHA PHFKGTAVVN GEFKELSLDD FKGKYLVLFF YPLDFTFVCP TEIVAFSDKA NEFHDVNCEV VAVSVDSHFS HLAWINTPRK NGGLGHMNIT LLSDLTKQIS RDYGVLLESA GIALRGLFII DPNGVIKHLS VNDLPVGRSV EEPLRLVKAF QFVETHGEVC PANWTPESPT IKPSPTASKE YFEKVHQ //