ID L5N217_9BACI Unreviewed; 220 AA.
AC L5N217;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 27-MAR-2024, entry version 52.
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 ORFNames=D479_17439 {ECO:0000313|EMBL:ELK44859.1};
OS Halobacillus sp. BAB-2008.
OC Bacteria; Bacillota; Bacilli; Bacillales; Bacillaceae; Halobacillus.
OX NCBI_TaxID=1246484 {ECO:0000313|EMBL:ELK44859.1, ECO:0000313|Proteomes:UP000010769};
RN [1] {ECO:0000313|EMBL:ELK44859.1, ECO:0000313|Proteomes:UP000010769}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BAB-2008 {ECO:0000313|EMBL:ELK44859.1,
RC ECO:0000313|Proteomes:UP000010769};
RX PubMed=23469348;
RA Joshi M.N., Pandit A.S., Sharma A., Pandya R.V., Saxena A.K.,
RA Bagatharia S.B.;
RT "Draft Genome Sequence of the Halophilic Bacterium Halobacillus sp. Strain
RT BAB-2008.";
RL Genome Announc. 1:E00222-12(2013).
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|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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ELK44859.1}.
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DR EMBL; ANPF01000081; ELK44859.1; -; Genomic_DNA.
DR RefSeq; WP_008639427.1; NZ_ANPF01000081.1.
DR AlphaFoldDB; L5N217; -.
DR PATRIC; fig|1246484.3.peg.3548; -.
DR eggNOG; COG0450; Bacteria.
DR OrthoDB; 9812811at2; -.
DR Proteomes; UP000010769; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
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:SF171; AT16346P-RELATED; 1.
DR PANTHER; PTHR10681; THIOREDOXIN PEROXIDASE; 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|ARBA:ARBA00023157, ECO:0000256|HAMAP-
KW 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:UP000010769}.
FT DOMAIN 15..170
FT /note="Thioredoxin"
FT /evidence="ECO:0000259|PROSITE:PS51352"
FT ACT_SITE 56
FT /note="Cysteine sulfenic acid (-SOH) intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT ACT_SITE 56
FT /note="Cysteine sulfenic acid (-SOH) intermediate; for
FT peroxidase activity"
FT /evidence="ECO:0000256|PIRSR:PIRSR000239-1"
FT BINDING 133
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 56
FT /note="Interchain (with Cys-216); in linked form"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 210..216
FT /note="Alternate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 216
FT /note="Interchain (with Cys-56); in linked form"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
SQ SEQUENCE 220 AA; 24871 MW; 461C76BD43464F0A CRC64;
MEREQMEQEE TYHLPRIGEK APDFKAQTTH GELSLGDFAG KWLILFSHPS DFTPVCTTEF
VAFQSIYGSL RDKGVELLGL SVDSVSSHIA WIQNIEKNFD TTIEFPVIAD LDQSVAQKFG
MIMPESDGTE TSRAVFVIDD QQIVRSVIYY PLTTGRNMQE IVRLVEALKV TDEHGVSTPA
DWQQGDQVIA SPPKTTKAAK ERLNDPDYDC VDWYFCKQDL
//
