ID   HSLO_ALKHC              Reviewed;         291 AA.
AC   Q9KGH4;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   25-MAY-2022, entry version 103.
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=BH0087;
OS   Alkalihalobacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344
OS   / JCM 9153 / C-125) (Bacillus halodurans).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Alkalihalobacillus.
OX   NCBI_TaxID=272558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125;
RX   PubMed=11058132; DOI=10.1093/nar/28.21.4317;
RA   Takami H., Nakasone K., Takaki Y., Maeno G., Sasaki R., Masui N., Fuji F.,
RA   Hirama C., Nakamura Y., Ogasawara N., Kuhara S., Horikoshi K.;
RT   "Complete genome sequence of the alkaliphilic bacterium Bacillus halodurans
RT   and genomic sequence comparison with Bacillus subtilis.";
RL   Nucleic Acids Res. 28:4317-4331(2000).
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}.
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DR   EMBL; BA000004; BAB03806.1; -; Genomic_DNA.
DR   PIR; G83660; G83660.
DR   RefSeq; WP_010896271.1; NC_002570.2.
DR   AlphaFoldDB; Q9KGH4; -.
DR   SMR; Q9KGH4; -.
DR   STRING; 272558.10172699; -.
DR   EnsemblBacteria; BAB03806; BAB03806; BAB03806.
DR   KEGG; bha:BH0087; -.
DR   eggNOG; COG1281; Bacteria.
DR   HOGENOM; CLU_054493_1_0_9; -.
DR   OMA; DMQCECC; -.
DR   OrthoDB; 1406579at2; -.
DR   Proteomes; UP000001258; 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..291
FT                   /note="33 kDa chaperonin"
FT                   /id="PRO_0000192165"
FT   DISULFID        237..239
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00117"
FT   DISULFID        270..273
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00117"
SQ   SEQUENCE   291 AA;  31311 MW;  70C86BA9D39C3100 CRC64;
     MGDYLVKALG FEGKVRAYAL KATEMVNEAV RRQDTWPTAS AALGRTMMAG TMMAAMLKGD
     AKLTVKVEGD GPIGAIIVDS QANGQTRGYV KNPHVHFELN EHGKLDVARA VGTNGSLSVV
     KDIGLRDHFT GSVPLVSGEL GEDFTYYFVS SEQTPSSVGV GVLVNPDNSV LAAGGFVLQL
     MPGADDAIIS EIEKRLQTIP PISKLVEAGM PPEEILAALL GDDNVKILEK MPIEFACQCS
     KERIARAIIS LGKDEIRAMI EEDGGAETTC HFCNEVYLFS KEELETLYEE A