ID   HSLU_RICBR              Reviewed;         452 AA.
AC   Q1RIB7;
DT   20-FEB-2007, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 1.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=ATP-dependent protease ATPase subunit HslU {ECO:0000255|HAMAP-Rule:MF_00249};
DE   AltName: Full=Unfoldase HslU {ECO:0000255|HAMAP-Rule:MF_00249};
GN   Name=hslU {ECO:0000255|HAMAP-Rule:MF_00249}; OrderedLocusNames=RBE_0816;
OS   Rickettsia bellii (strain RML369-C).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; belli group.
OX   NCBI_TaxID=336407;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RML369-C;
RX   PubMed=16703114; DOI=10.1371/journal.pgen.0020076;
RA   Ogata H., La Scola B., Audic S., Renesto P., Blanc G., Robert C.,
RA   Fournier P.-E., Claverie J.-M., Raoult D.;
RT   "Genome sequence of Rickettsia bellii illuminates the role of amoebae in
RT   gene exchanges between intracellular pathogens.";
RL   PLoS Genet. 2:733-744(2006).
CC   -!- FUNCTION: ATPase subunit of a proteasome-like degradation complex; this
CC       subunit has chaperone activity. The binding of ATP and its subsequent
CC       hydrolysis by HslU are essential for unfolding of protein substrates
CC       subsequently hydrolyzed by HslV. HslU recognizes the N-terminal part of
CC       its protein substrates and unfolds these before they are guided to HslV
CC       for hydrolysis. {ECO:0000255|HAMAP-Rule:MF_00249}.
CC   -!- SUBUNIT: A double ring-shaped homohexamer of HslV is capped on each
CC       side by a ring-shaped HslU homohexamer. The assembly of the HslU/HslV
CC       complex is dependent on binding of ATP. {ECO:0000255|HAMAP-
CC       Rule:MF_00249}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00249}.
CC   -!- SIMILARITY: Belongs to the ClpX chaperone family. HslU subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_00249}.
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DR   EMBL; CP000087; ABE04897.1; -; Genomic_DNA.
DR   RefSeq; WP_011477484.1; NC_007940.1.
DR   AlphaFoldDB; Q1RIB7; -.
DR   SMR; Q1RIB7; -.
DR   STRING; 336407.RBE_0816; -.
DR   EnsemblBacteria; ABE04897; ABE04897; RBE_0816.
DR   KEGG; rbe:RBE_0816; -.
DR   eggNOG; COG1220; Bacteria.
DR   HOGENOM; CLU_033123_0_0_5; -.
DR   OMA; KYGMIKT; -.
DR   OrthoDB; 718259at2; -.
DR   Proteomes; UP000001951; Chromosome.
DR   GO; GO:0009376; C:HslUV protease complex; IEA:UniProtKB-UniRule.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0016887; F:ATP hydrolysis activity; IEA:InterPro.
DR   GO; GO:0008233; F:peptidase activity; IEA:InterPro.
DR   GO; GO:0036402; F:proteasome-activating activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0043335; P:protein unfolding; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.300; -; 2.
DR   HAMAP; MF_00249; HslU; 1.
DR   InterPro; IPR003593; AAA+_ATPase.
DR   InterPro; IPR003959; ATPase_AAA_core.
DR   InterPro; IPR019489; Clp_ATPase_C.
DR   InterPro; IPR004491; HslU.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   PANTHER; PTHR48102:SF3; PTHR48102:SF3; 1.
DR   Pfam; PF00004; AAA; 1.
DR   Pfam; PF07724; AAA_2; 1.
DR   Pfam; PF10431; ClpB_D2-small; 1.
DR   SMART; SM00382; AAA; 1.
DR   SMART; SM01086; ClpB_D2-small; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR00390; hslU; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Chaperone; Cytoplasm; Nucleotide-binding.
FT   CHAIN           1..452
FT                   /note="ATP-dependent protease ATPase subunit HslU"
FT                   /id="PRO_0000277980"
FT   BINDING         31
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         73..78
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         263
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         330
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         402
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
SQ   SEQUENCE   452 AA;  49865 MW;  59DE8AA2EDCA649D CRC64;
     MKSTKTTNTN KKDPMGLTPS QIVNELNRFI VGQEKAKKAV AIALRNRGRR KRVEGNLRNE
     IVPKNILMIG STGVGKTEIA RRLAKLTNSP FYKIEATKFT EVGYVGRDVE SIIRDLVEIA
     VNTQKTIAKT EVDINAREKA IERVLESLVG KTSSSKTREK FQEKILSGEL DDTEIEISVA
     DTAPVGGGSF EIPGMPGASM GVLNLGDMIG RAFGTTKTKT KKMLVKEAMS IILSEESEKL
     IDQEKIIQQA INLVENDGIV FIDEIDKIAS VANSGAKNSE ISREGVQKDL LPLIEGTTVN
     TKYGPVKTDH ILFIASGAFH IAKPSDLLPE LQGRLPIRVE LNSLTKEDMI KILLEPETSL
     IKQYSALIGT EKVELEFTNS AIEKIADYAT TVNLEIEDIG ARRLHTILEN LLEDISFRAS
     EMQGEKISID DKFVENQLSK ILTNLDLAKF VL