ID   HSLU_XYLF2              Reviewed;         459 AA.
AC   B2IA20;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-JUN-2008, sequence version 1.
DT   03-AUG-2022, entry version 67.
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};
GN   OrderedLocusNames=XfasM23_0738;
OS   Xylella fastidiosa (strain M23).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Xanthomonadales;
OC   Xanthomonadaceae; Xylella.
OX   NCBI_TaxID=405441;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=M23;
RX   PubMed=20601474; DOI=10.1128/jb.00651-10;
RA   Chen J., Xie G., Han S., Chertkov O., Sims D., Civerolo E.L.;
RT   "Whole genome sequences of two Xylella fastidiosa strains (M12 and M23)
RT   causing almond leaf scorch disease in California.";
RL   J. Bacteriol. 192:4534-4534(2010).
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; CP001011; ACB92179.1; -; Genomic_DNA.
DR   RefSeq; WP_004089043.1; NC_010577.1.
DR   AlphaFoldDB; B2IA20; -.
DR   SMR; B2IA20; -.
DR   EnsemblBacteria; ACB92179; ACB92179; XfasM23_0738.
DR   KEGG; xfn:XfasM23_0738; -.
DR   HOGENOM; CLU_033123_0_0_6; -.
DR   OMA; KYGMIKT; -.
DR   Proteomes; UP000001698; 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; Stress response.
FT   CHAIN           1..459
FT                   /note="ATP-dependent protease ATPase subunit HslU"
FT                   /id="PRO_1000100983"
FT   BINDING         26
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         68..73
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         271
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         337
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
FT   BINDING         409
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00249"
SQ   SEQUENCE   459 AA;  51489 MW;  6D7460C2277F811C CRC64;
     MPSKTDFTSS TMTPREIVQE LDRHIVGQQA AKRSVAIALR NRWRRMQLPE ELRNEVMPKN
     ILMIGPTGVG KTEIARRLAT LANAPFVKVE ATRFTEVGYV GKDVEQIGRD LVDTAVKMYR
     EQAKVRVRTQ AEEYAEERIL DALLPRRSVG IGFDADADAI RQEPSAHESE TRAKFRRMLR
     SGELEEREIE LDVAVNVSMD IMTPPGMEEM GQQLRQMFSN IGGGKSQKRK LAIKAARPLL
     IEEEAAKLVN EDEIRAAAIE ACEQNGIVFI DEIDKVVKRG DTVGGGDVSR EGVQRDLLPL
     VEGSNVSTKY GTIRTNHILF IASGAFHLTK PSDLIPELQG RFPIRVELDA LSKADFIRIL
     TEPKAALTKQ YQELLKTEGV SLDFTEDAID RIAEIAYLVN ERQENIGARR LHTVLERLLE
     TLSYESPDRD GESVTVDADY VNAHLGELVK DPDLSRYIL