ID   HSLO_HAEIN              Reviewed;         293 AA.
AC   P44877;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   02-SEP-2026, entry version 127.
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};
GN   OrderedLocusNames=HI_0810;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Pasteurellales; Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
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   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; L42023; AAC22469.1; -; Genomic_DNA.
DR   PIR; H64158; H64158.
DR   AlphaFoldDB; P44877; -.
DR   SMR; P44877; -.
DR   STRING; 71421.HI_0810; -.
DR   EnsemblBacteria; AAC22469; AAC22469; HI_0810.
DR   KEGG; hin:HI_0810; -.
DR   PATRIC; fig|71421.8.peg.851; -.
DR   eggNOG; COG1281; Bacteria.
DR   HOGENOM; CLU_054493_0_0_6; -.
DR   OrthoDB; 9793753at2; -.
DR   PhylomeDB; P44877; -.
DR   BioCyc; HINF71421:G1GJ1-851-MONOMER; -.
DR   Proteomes; UP000000579; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0044183; F:protein folding chaperone; IBA:GO_Central.
DR   GO; GO:0042026; P:protein refolding; IBA:GO_Central.
DR   CDD; cd00498; Hsp33; 1.
DR   Gene3D; 1.10.287.480; helix hairpin bin; 1.
DR   Gene3D; 3.55.30.10; Hsp33 domain; 1.
DR   Gene3D; 3.90.1280.10; HSP33 redox switch-like; 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   InterPro; IPR023212; Hsp33_helix_hairpin_bin_dom_sf.
DR   NCBIfam; NF001033; PRK00114.1; 1.
DR   PANTHER; PTHR30111; 33 KDA CHAPERONIN; 1.
DR   PANTHER; PTHR30111:SF1; 33 KDA CHAPERONIN; 1.
DR   Pfam; PF01430; HSP33; 1.
DR   PIRSF; PIRSF005261; Heat_shock_Hsp33; 1.
DR   SUPFAM; SSF64397; Hsp33 domain; 1.
DR   SUPFAM; SSF118352; HSP33 redox switch-like; 1.
PE   3: Inferred from homology;
KW   Chaperone; Cytoplasm; Disulfide bond; Redox-active center;
KW   Reference proteome; Zinc.
FT   CHAIN           1..293
FT                   /note="33 kDa chaperonin"
FT                   /id="PRO_0000192180"
FT   DISULFID        237..239
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   293 AA;  33103 MW;  05C25281B6CCE96A CRC64;
     MTNQQDYTQD NDKLYRYLFQ HRAVRGEWVR LNKTFTDTLN THQYPKAVQD LLGEMMVATN
     LLTATLKFAG NITVQIQGDG PLRLALVNGN DQQQIRALAR VDGNITENMS LHNMIGKGVL
     VITIAPKEGE RYQGVISLDK PTITECLEDY FVRSEQLQTQ LIIRTGEYEG KPVAAGMLLQ
     IMPDGSGTPE DFEHLTTLAA TVKDEELFGL PAEELLYRLY HEETVNLYPA QDVQFFCGCS
     AERSSSALLL ISDEEIDEIL AEHKGRIDMQ CECCGTHYFF NKEAIEKLKS TRV
//