TDX1_BRUMA
ID TDX1_BRUMA Reviewed; 229 AA.
AC P48822;
DT 01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1996, sequence version 1.
DT 25-MAY-2022, entry version 99.
DE RecName: Full=Peroxiredoxin 1;
DE EC=1.11.1.24 {ECO:0000250|UniProtKB:Q06830};
DE AltName: Full=Thiol-specific antioxidant protein 1;
DE AltName: Full=Thioredoxin peroxidase 1;
DE Short=Bm-TPx-1;
DE AltName: Full=Thioredoxin-dependent peroxide reductase 1;
DE AltName: Full=Thioredoxin-dependent peroxiredoxin 1 {ECO:0000305};
GN Name=TSA1;
OS Brugia malayi (Filarial nematode worm).
OC Eukaryota; Metazoa; Ecdysozoa; Nematoda; Chromadorea; Rhabditida;
OC Spirurina; Spiruromorpha; Filarioidea; Onchocercidae; Brugia.
OX NCBI_TaxID=6279;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=9566515; DOI=10.1016/s0166-6851(97)00213-2;
RA Ghosh I., Eisinger S.W., Raghavan N., Scott A.L.;
RT "Thioredoxin peroxidases from Brugia malayi.";
RL Mol. Biochem. Parasitol. 91:207-220(1998).
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 and as sensor of hydrogen peroxide-mediated
CC signaling events. {ECO:0000250|UniProtKB:Q06830}.
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;
CC Evidence={ECO:0000250|UniProtKB:Q06830};
CC -!- SUBUNIT: Homodimer; disulfide-linked, upon oxidation.
CC {ECO:0000250|UniProtKB:Q06830}.
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. In this typical 2-Cys
CC peroxiredoxin, C(R) is provided by the other dimeric subunit to form an
CC intersubunit disulfide. The disulfide is subsequently reduced by
CC thioredoxin. {ECO:0000250|UniProtKB:Q06830}.
CC -!- SIMILARITY: Belongs to the peroxiredoxin family. AhpC/Prx1 subfamily.
CC {ECO:0000305}.
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DR EMBL; U34251; AAC23701.1; -; mRNA.
DR AlphaFoldDB; P48822; -.
DR SMR; P48822; -.
DR STRING; 6279.P48822; -.
DR Proteomes; UP000006672; Unassembled WGS sequence.
DR GO; GO:0004601; F:peroxidase activity; IEA:UniProtKB-KW.
DR GO; GO:0051920; F:peroxiredoxin activity; IEA:UniProtKB-EC.
DR InterPro; IPR000866; AhpC/TSA.
DR InterPro; IPR024706; Peroxiredoxin_AhpC-typ.
DR InterPro; IPR019479; Peroxiredoxin_C.
DR InterPro; IPR036249; Thioredoxin-like_sf.
DR InterPro; IPR013766; Thioredoxin_domain.
DR Pfam; PF10417; 1-cysPrx_C; 1.
DR Pfam; PF00578; AhpC-TSA; 1.
DR PIRSF; PIRSF000239; AHPC; 1.
DR SUPFAM; SSF52833; SSF52833; 1.
DR PROSITE; PS51352; THIOREDOXIN_2; 1.
PE 2: Evidence at transcript level;
KW Antioxidant; Disulfide bond; Oxidoreductase; Peroxidase;
KW Redox-active center; Reference proteome.
FT CHAIN 1..229
FT /note="Peroxiredoxin 1"
FT /id="PRO_0000135089"
FT DOMAIN 33..192
FT /note="Thioredoxin"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00691"
FT ACT_SITE 78
FT /note="Cysteine sulfenic acid (-SOH) intermediate"
FT /evidence="ECO:0000250|UniProtKB:Q06830"
FT DISULFID 78
FT /note="Interchain (with C-200); in linked form"
FT /evidence="ECO:0000250|UniProtKB:Q06830"
FT DISULFID 200
FT /note="Interchain (with C-78); in linked form"
FT /evidence="ECO:0000250|UniProtKB:Q06830"
SQ SEQUENCE 229 AA; 25367 MW; B386EB6C52619497 CRC64;
MIRSVLASVS PLRQILASQL CTSSITLAGI RPLGPKNKAP DFSGTAVVNG DFKTISMKDY
KGKWLILFFY PLDFTFVCPT EITAFSDRCA EFQKLNTELI ACSCDSHFSH LAWIQTPRSE
VGGLGDMKIP VLADFNKDIA NAFGVLDHET GISYRGLFLI DPSGEIRHSL VNDLSVGRSV
DEAFRTLKAF QFVEKHGEVC PANWSDDKPT IKPGIKESKE YFKKVDGHT