ID   HSLO_PROMS              Reviewed;         302 AA.
AC   A2BQE5;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 1.
DT   25-MAY-2022, entry version 78.
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=A9601_07201;
OS   Prochlorococcus marinus (strain AS9601).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=146891;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AS9601;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
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; CP000551; ABM70006.1; -; Genomic_DNA.
DR   RefSeq; WP_011818168.1; NC_008816.1.
DR   AlphaFoldDB; A2BQE5; -.
DR   SMR; A2BQE5; -.
DR   STRING; 146891.A9601_07201; -.
DR   EnsemblBacteria; ABM70006; ABM70006; A9601_07201.
DR   KEGG; pmb:A9601_07201; -.
DR   eggNOG; COG1281; Bacteria.
DR   HOGENOM; CLU_054493_1_0_3; -.
DR   OMA; DMQCECC; -.
DR   OrthoDB; 1406579at2; -.
DR   Proteomes; UP000002590; 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; Zinc.
FT   CHAIN           1..302
FT                   /note="33 kDa chaperonin"
FT                   /id="PRO_1000015557"
FT   DISULFID        247..249
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00117"
FT   DISULFID        280..283
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00117"
SQ   SEQUENCE   302 AA;  33568 MW;  63F0B449467094BB CRC64;
     MQDRIVRATA ANGGIRLVAV LTTESSLEAK KRHGLSYLTT CILGRAFSAS LLLASSMKIM
     HGRVTLRVRS DGPLKGLLVD AGRDGKVRGY VGNPNLELDL VKIDNDKYSF DFTKALGTGY
     LNVIRDSGFG EPFTSTVELV NGNIAEDLAS YLYHSEQTPS AVFIGEKIQN KSVICSGGLL
     AQVLPKKDTD PLLISLLEER CKEINSFSED LFKSKHNLLE LIRNIFPDID DKSISEKARS
     QEVSFKCKCS KQRSLNAMKM LDKSELEDIL KKDGKAELVC EFCKNKYLIN FEEIKSMIEN
     QS