ID C5CI44_KOSOT Unreviewed; 214 AA.
AC C5CI44;
DT 28-JUL-2009, integrated into UniProtKB/TrEMBL.
DT 28-JUL-2009, sequence version 1.
DT 27-MAR-2024, entry version 81.
DE RecName: Full=Peroxiredoxin {ECO:0000256|HAMAP-Rule:MF_00401};
DE EC=1.11.1.24 {ECO:0000256|HAMAP-Rule:MF_00401};
DE AltName: Full=Thioredoxin peroxidase {ECO:0000256|HAMAP-Rule:MF_00401};
DE AltName: Full=Thioredoxin-dependent peroxiredoxin {ECO:0000256|HAMAP-Rule:MF_00401};
GN OrderedLocusNames=Kole_1121 {ECO:0000313|EMBL:ACR79823.1};
OS Kosmotoga olearia (strain ATCC BAA-1733 / DSM 21960 / TBF 19.5.1).
OC Bacteria; Thermotogota; Thermotogae; Kosmotogales; Kosmotogaceae;
OC Kosmotoga.
OX NCBI_TaxID=521045 {ECO:0000313|EMBL:ACR79823.1, ECO:0000313|Proteomes:UP000002382};
RN [1] {ECO:0000313|EMBL:ACR79823.1, ECO:0000313|Proteomes:UP000002382}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-1733 / DSM 21960 / TBF 19.5.1
RC {ECO:0000313|Proteomes:UP000002382};
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Tice H., Bruce D.,
RA Goodwin L., Pitluck S., Chertkov O., Brettin T., Detter J.C., Han C.,
RA Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N., Ovchinnikova G.,
RA Noll K.;
RT "Complete sequence of Thermotogales bacterium TBF 19.5.1.";
RL Submitted (JUN-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ACR79823.1, ECO:0000313|Proteomes:UP000002382}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-1733 / DSM 21960 / TBF 19.5.1
RC {ECO:0000313|Proteomes:UP000002382};
RX PubMed=21914881; DOI=10.1128/JB.05828-11;
RA Swithers K.S., Dipippo J.L., Bruce D.C., Detter C., Tapia R., Han S.,
RA Goodwin L.A., Han J., Woyke T., Pitluck S., Pennacchio L., Nolan M.,
RA Mikhailova N., Land M.L., Nesbo C.L., Gogarten J.P., Noll K.M.;
RT "Genome Sequence of Kosmotoga olearia Strain TBF 19.5.1, a Thermophilic
RT Bacterium with a Wide Growth Temperature Range, Isolated from the Troll B
RT Oil Platform in the North Sea.";
RL J. Bacteriol. 193:5566-5567(2011).
CC -!- FUNCTION: Thiol-specific peroxidase that catalyzes the reduction of
CC hydrogen peroxide and organic hydroperoxides to water and alcohols,
CC respectively. Plays a role in cell protection against oxidative stress
CC by detoxifying peroxides. {ECO:0000256|ARBA:ARBA00037420,
CC ECO:0000256|HAMAP-Rule:MF_00401}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-dithiol + a hydroperoxide = [thioredoxin]-
CC disulfide + an alcohol + H2O; Xref=Rhea:RHEA:62620, Rhea:RHEA-
CC COMP:10698, Rhea:RHEA-COMP:10700, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:29950, ChEBI:CHEBI:30879, ChEBI:CHEBI:35924,
CC ChEBI:CHEBI:50058; EC=1.11.1.24; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00401};
CC -!- SUBUNIT: Homodecamer. Pentamer of dimers that assemble into a ring
CC structure. {ECO:0000256|HAMAP-Rule:MF_00401}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00401}.
CC -!- MISCELLANEOUS: The active site is a conserved redox-active cysteine
CC residue, the peroxidatic cysteine (C(P)), which makes the nucleophilic
CC attack on the peroxide substrate. The peroxide oxidizes the C(P)-SH to
CC cysteine sulfenic acid (C(P)-SOH), which then reacts with another
CC cysteine residue, the resolving cysteine (C(R)), to form a disulfide
CC bridge. The disulfide is subsequently reduced by an appropriate
CC electron donor to complete the catalytic cycle. Although the primary
CC sequence of this enzyme is similar to those of the 1-Cys Prx6 enzymes,
CC its catalytic properties resemble those of the typical 2-Cys Prxs and
CC C(R) is provided by the other dimeric subunit to form an intersubunit
CC disulfide. The disulfide is subsequently reduced by thioredoxin.
CC {ECO:0000256|HAMAP-Rule:MF_00401}.
CC -!- SIMILARITY: Belongs to the peroxiredoxin family. AhpC/Prx1 subfamily.
CC {ECO:0000256|ARBA:ARBA00009796}.
CC -!- SIMILARITY: Belongs to the peroxiredoxin family. Prx6 subfamily.
CC {ECO:0000256|ARBA:ARBA00025719, ECO:0000256|HAMAP-Rule:MF_00401}.
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DR EMBL; CP001634; ACR79823.1; -; Genomic_DNA.
DR RefSeq; WP_015868481.1; NC_012785.1.
DR AlphaFoldDB; C5CI44; -.
DR STRING; 521045.Kole_1121; -.
DR KEGG; kol:Kole_1121; -.
DR eggNOG; COG0450; Bacteria.
DR HOGENOM; CLU_042529_4_4_0; -.
DR OrthoDB; 9812811at2; -.
DR Proteomes; UP000002382; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0102039; F:NADH-dependent peroxiredoxin activity; IEA:RHEA.
DR GO; GO:0140824; F:thioredoxin-dependent peroxiredoxin activity; IEA:UniProtKB-EC.
DR CDD; cd03016; PRX_1cys; 1.
DR Gene3D; 3.40.30.10; Glutaredoxin; 1.
DR HAMAP; MF_00401; Peroxiredoxin; 1.
DR InterPro; IPR000866; AhpC/TSA.
DR InterPro; IPR024706; Peroxiredoxin_AhpC-typ.
DR InterPro; IPR019479; Peroxiredoxin_C.
DR InterPro; IPR022915; Peroxiredoxin_TDXH.
DR InterPro; IPR045020; PRX_1cys.
DR InterPro; IPR036249; Thioredoxin-like_sf.
DR InterPro; IPR013766; Thioredoxin_domain.
DR PANTHER; PTHR10681; THIOREDOXIN PEROXIDASE; 1.
DR PANTHER; PTHR10681:SF128; THIOREDOXIN-DEPENDENT PEROXIDE REDUCTASE, MITOCHONDRIAL; 1.
DR Pfam; PF10417; 1-cysPrx_C; 1.
DR Pfam; PF00578; AhpC-TSA; 1.
DR PIRSF; PIRSF000239; AHPC; 1.
DR SUPFAM; SSF52833; Thioredoxin-like; 1.
DR PROSITE; PS51352; THIOREDOXIN_2; 1.
PE 3: Inferred from homology;
KW Antioxidant {ECO:0000256|ARBA:ARBA00022862, ECO:0000256|HAMAP-
KW Rule:MF_00401};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00401};
KW Disulfide bond {ECO:0000256|HAMAP-Rule:MF_00401};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00401};
KW Peroxidase {ECO:0000256|ARBA:ARBA00022559, ECO:0000256|HAMAP-
KW Rule:MF_00401}; Redox-active center {ECO:0000256|HAMAP-Rule:MF_00401};
KW Reference proteome {ECO:0000313|Proteomes:UP000002382}.
FT DOMAIN 6..161
FT /note="Thioredoxin"
FT /evidence="ECO:0000259|PROSITE:PS51352"
FT ACT_SITE 48
FT /note="Cysteine sulfenic acid (-SOH) intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT ACT_SITE 48
FT /note="Cysteine sulfenic acid (-SOH) intermediate; for
FT peroxidase activity"
FT /evidence="ECO:0000256|PIRSR:PIRSR000239-1"
FT BINDING 124
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 48
FT /note="Interchain (with Cys-209); in linked form"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 203..209
FT /note="Alternate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 209
FT /note="Interchain (with Cys-48); in linked form"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
SQ SEQUENCE 214 AA; 24597 MW; 8C76F5589C70D1EE CRC64;
MEERIPLIGE KFPELKVQTT HGVMKLPDAF KGKWFILFSH PADFTPVCTT EFVAFQKRYD
EFKKLNTELI GLSIDQVFSH IKWVEWIKDN LNVEIKFPVI ADDTGKVASK LGLIHPGKGT
NTVRAVFIVD PEGTIRAILY YPQELGRNVD EILRMIKGFQ VSDDKGVAIP ANWPNNELIG
DEVIIPPASD METAEKRKEE YQCFDWWFCH KKVD
//
