ID A0A3A5MAG6_9MICO Unreviewed; 240 AA.
AC A0A3A5MAG6;
DT 05-DEC-2018, integrated into UniProtKB/TrEMBL.
DT 05-DEC-2018, sequence version 1.
DT 27-MAR-2024, entry version 23.
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=D6T64_16875 {ECO:0000313|EMBL:RJT87117.1};
OS Cryobacterium melibiosiphilum.
OC Bacteria; Actinomycetota; Actinomycetes; Micrococcales; Microbacteriaceae;
OC Cryobacterium.
OX NCBI_TaxID=995039 {ECO:0000313|EMBL:RJT87117.1, ECO:0000313|Proteomes:UP000272015};
RN [1] {ECO:0000313|EMBL:RJT87117.1, ECO:0000313|Proteomes:UP000272015}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Hh39 {ECO:0000313|EMBL:RJT87117.1,
RC ECO:0000313|Proteomes:UP000272015};
RA Liu Q., Xin Y.-H.;
RT "Novel species of Cryobacterium.";
RL Submitted (SEP-2018) to the EMBL/GenBank/DDBJ databases.
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}.
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:RJT87117.1}.
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DR EMBL; QZVS01000092; RJT87117.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A3A5MAG6; -.
DR OrthoDB; 9812811at2; -.
DR Proteomes; UP000272015; 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; 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}.
FT DOMAIN 2..164
FT /note="Thioredoxin"
FT /evidence="ECO:0000259|PROSITE:PS51352"
FT ACT_SITE 44
FT /note="Cysteine sulfenic acid (-SOH) intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT ACT_SITE 44
FT /note="Cysteine sulfenic acid (-SOH) intermediate; for
FT peroxidase activity"
FT /evidence="ECO:0000256|PIRSR:PIRSR000239-1"
FT BINDING 127
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 44
FT /note="Interchain (with Cys-215); in linked form"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 209..215
FT /note="Alternate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
FT DISULFID 215
FT /note="Interchain (with Cys-44); in linked form"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00401"
SQ SEQUENCE 240 AA; 26543 MW; 8B80CAF7D9DDB440 CRC64;
MPRLGDPAPH FTAVTTQGEI TFPEDYAGRW VILFSHPSDF TPVCTSEFMT FAVMHPEFAE
YNTDLVGLSV DGLYSHIAWL RTIEEKITFR GHSGVQVKFP LIDDHTMSIA MQYGMIMPGE
HASSAVRAVF IIDPTGTIRT IIYYPLSTGR NFPELLRVIK ALQTADTFDV ATPADWVPGE
PVIVPLPGSC GTAKERMQDS TDETSGIECQ DWFFCTKPIS ESEIEETLRV TLTAASLTSA
//
