ID   HSLO_CLOTE              Reviewed;         294 AA.
AC   Q891S6;
DT   20-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   30-MAY-2006, sequence version 2.
DT   03-AUG-2022, entry version 95.
DE   RecName: Full=33 kDa chaperonin {ECO:0000255|HAMAP-Rule:MF_00117};
DE   AltName: Full=Heat shock protein 33 homolog {ECO:0000255|HAMAP-Rule:MF_00117};
DE            Short=HSP33 {ECO:0000255|HAMAP-Rule:MF_00117};
GN   Name=hslO {ECO:0000255|HAMAP-Rule:MF_00117}; OrderedLocusNames=CTC_02291;
OS   Clostridium tetani (strain Massachusetts / E88).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=212717;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Massachusetts / E88;
RX   PubMed=12552129; DOI=10.1073/pnas.0335853100;
RA   Brueggemann H., Baeumer S., Fricke W.F., Wiezer A., Liesegang H.,
RA   Decker I., Herzberg C., Martinez-Arias R., Merkl R., Henne A.,
RA   Gottschalk G.;
RT   "The genome sequence of Clostridium tetani, the causative agent of tetanus
RT   disease.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:1316-1321(2003).
CC   -!- FUNCTION: Redox regulated molecular chaperone. Protects both thermally
CC       unfolding and oxidatively damaged proteins from irreversible
CC       aggregation. Plays an important role in the bacterial defense system
CC       toward oxidative stress. {ECO:0000255|HAMAP-Rule:MF_00117}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00117}.
CC   -!- PTM: Under oxidizing conditions two disulfide bonds are formed
CC       involving the reactive cysteines. Under reducing conditions zinc is
CC       bound to the reactive cysteines and the protein is inactive.
CC       {ECO:0000255|HAMAP-Rule:MF_00117}.
CC   -!- SIMILARITY: Belongs to the HSP33 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00117}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAO36769.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AE015927; AAO36769.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_035108957.1; NC_004557.1.
DR   AlphaFoldDB; Q891S6; -.
DR   SMR; Q891S6; -.
DR   STRING; 212717.CTC_02291; -.
DR   EnsemblBacteria; AAO36769; AAO36769; CTC_02291.
DR   GeneID; 64179633; -.
DR   KEGG; ctc:CTC_02291; -.
DR   HOGENOM; CLU_054493_1_0_9; -.
DR   OMA; DMQCECC; -.
DR   OrthoDB; 1406579at2; -.
DR   Proteomes; UP000001412; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0051082; F:unfolded protein binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006457; P:protein folding; IEA:InterPro.
DR   CDD; cd00498; Hsp33; 1.
DR   Gene3D; 3.55.30.10; -; 1.
DR   Gene3D; 3.90.1280.10; -; 1.
DR   HAMAP; MF_00117; HslO; 1.
DR   InterPro; IPR000397; Heat_shock_Hsp33.
DR   InterPro; IPR016154; Heat_shock_Hsp33_C.
DR   InterPro; IPR016153; Heat_shock_Hsp33_N.
DR   PANTHER; PTHR30111; PTHR30111; 1.
DR   Pfam; PF01430; HSP33; 1.
DR   PIRSF; PIRSF005261; Heat_shock_Hsp33; 1.
DR   SUPFAM; SSF118352; SSF118352; 1.
DR   SUPFAM; SSF64397; SSF64397; 1.
PE   3: Inferred from homology;
KW   Chaperone; Cytoplasm; Disulfide bond; Redox-active center;
KW   Reference proteome; Zinc.
FT   CHAIN           1..294
FT                   /note="33 kDa chaperonin"
FT                   /id="PRO_0000192172"
FT   DISULFID        238..240
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00117"
FT   DISULFID        271..274
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00117"
SQ   SEQUENCE   294 AA;  31923 MW;  C70C885CD5B651DC CRC64;
     MADKLIKATA KDGQVRIIGA ITTELVNKGI EVHKCSPTGA AALGRMLTAG SLMGSMLKSE
     KDTITIKIDG GGEAKGVLVT AYPEGKVKGY IGNPLVHLPL NQNGKLDVGG AIGKNGNITV
     IKDLGLKDPY IGQVPIYSGE IGDDLAYYFT VSEQTPSAVG LGVLVDKDLS IKASGGFIIQ
     MMPGADELLA DFITYRLEEI PSITELISKG MSIEEILEFI FEGMDLKILE GIVPEYTCDC
     SREKIDRALI SIGYKDLKEI YDEGKTEELV CQFCNEKYFY DHEKIGELLR IMNN