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Protein

Heat shock protein 104

Gene

HSP104

Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Required, in concert with Hsp40 (YDJ1) and Hsp70 (SSA1) and small Hsps (HSP26), for the dissociation, resolubilization and refolding of aggregates of damaged proteins after heat or other environmental stresses. Extracts proteins from aggregates by unfolding and threading them in an ATP-dependent process through the axial channel of the protein hexamer, after which they can be refolded by components of the Hsp70/Hsp40 chaperone system. Substrate binding is ATP-dependent, and release of bound polypeptide is triggered by ATP hydrolysis. Also responsible for the maintenance of prions by dissociating prion fibrils into smaller oligomers, thereby producing transmissible seeds that can infect daughter cells during mitosis and meiosis. Loss of HSP104 can cure yeast cells of the prions [PSI+], [URE3] and [PIN+]. Excess HSP104 can also specifically cure cells of [PSI+].25 Publications

Enzyme regulationi

Inhibited by micromolar concentrations of guanidinium chloride. Inhibits the ATPase activity, but does not dissociate the hexameric protein.1 Publication

Kineticsi

  1. KM=170 µM for ATP (at NBD1)5 Publications
  2. KM=4.7 µM for ATP (at NBD2)5 Publications
  1. Vmax=1.25 nmol/min/µg enzyme for ATP5 Publications

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi212 – 2198ATP 1Sequence analysis
Nucleotide bindingi614 – 6218ATP 2Sequence analysis

GO - Molecular functioni

  • ADP binding Source: SGD
  • ATPase activity, coupled Source: SGD
  • ATP binding Source: SGD
  • chaperone binding Source: SGD
  • unfolded protein binding Source: SGD

GO - Biological processi

  • cellular heat acclimation Source: SGD
  • chaperone cofactor-dependent protein refolding Source: SGD
  • inheritance of oxidatively modified proteins involved in replicative cell aging Source: SGD
  • protein folding in endoplasmic reticulum Source: SGD
  • protein metabolic process Source: InterPro
  • protein unfolding Source: SGD
  • stress granule disassembly Source: SGD
  • trehalose metabolism in response to heat stress Source: SGD
Complete GO annotation...

Keywords - Molecular functioni

Chaperone

Keywords - Biological processi

Stress response

Keywords - Ligandi

ATP-binding, Nucleotide-binding

Enzyme and pathway databases

BioCyciYEAST:G3O-32130-MONOMER.
SABIO-RKP31539.

Names & Taxonomyi

Protein namesi
Recommended name:
Heat shock protein 104
Alternative name(s):
Protein aggregation-remodeling factor HSP104
Gene namesi
Name:HSP104
Ordered Locus Names:YLL026W
ORF Names:L0948
OrganismiSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Taxonomic identifieri559292 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaSaccharomycotinaSaccharomycetesSaccharomycetalesSaccharomycetaceaeSaccharomyces
Proteomesi
  • UP000002311 Componenti: Chromosome XII

Organism-specific databases

EuPathDBiFungiDB:YLL026W.
SGDiS000003949. HSP104.

Subcellular locationi

  • Cytoplasm
  • Nucleus

  • Note: Shuttles between the cytoplasm and the nucleus in an importin KAP95- and KAP121-dependent and an exportin XPO1-dependent manner. Accumulation in the nucleus is enhanced by severe heat shock. In the cytoplasm, concentrates on a perivacuolar compartment, the 'insoluble protein deposit' (IPOD), in which terminally aggregated proteins are sequestered. It is also found, to a lesser extend, at a 'juxtanuclear quality control' (JUNQ) compartment, where soluble ubiquitinated misfolded proteins accumulate.

GO - Cellular componenti

  • cytoplasm Source: SGD
  • nuclear periphery Source: SGD
  • nucleus Source: SGD
  • TRC complex Source: SGD
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Mutagenesisi184 – 1841D → A, D, F, N, L, Q or S: Confers resistance to prion-curing by guanidine. 1 Publication
Mutagenesisi184 – 1841D → K, W or Y: Impairs prion propagation. 1 Publication
Mutagenesisi217 – 2171G → S: Largely reduces ATP hydrolysis. Alters bud morphology and causes septin mislocalization; when associated with I-499. 3 Publications
Mutagenesisi217 – 2171G → V: Completely abolishes ATP hydrolysis. 3 Publications
Mutagenesisi218 – 2181K → T: Abolishes substrate binding. Unable to confer thermotolerance. Reduces ATP hydrolysis by 98%; when associated with T-315. Comletely abolishes ATPase activity; when associated with T-620. 10 Publications
Mutagenesisi257 – 2571Y → A: Reduces thermotolerance 10-fold. 1 Publication
Mutagenesisi285 – 2851E → Q in HSP104(TRAP); completely abolishes ATP hydrolysis, but does not affect nucleotide binding, thus keeping HSP104 in an ATP-bound state; when associated with Q-687. 2 Publications
Mutagenesisi315 – 3151A → T: Reduces ATP hydrolysis by 98%; when associated with T-218. 1 Publication
Mutagenesisi317 – 3171T → A: Reduces rate of ATP hydrolysis at NBD1 nearly 10-fold. No effect on oligomerization. 2 Publications
Mutagenesisi334 – 3341R → M: Reduces ATPase activity by 80%. Impairs oligomerization. 1 Publication
Mutagenesisi419 – 4191R → M: Reduces ATPase activity by 80%. 1 Publication
Mutagenesisi444 – 4441R → M: Reduces ATPase activity by 80%. 1 Publication
Mutagenesisi462 – 4621L → R: Impairs prion propagation, but does not affect thermotolerance. 1 Publication
Mutagenesisi495 – 4951R → M: Increases ATPase activity 3-fold. 1 Publication
Mutagenesisi499 – 4991T → I: Reduces ATP hydrolysis by 50%. Alters bud morphology and causes septin mislocalization; when associated with S-217. 1 Publication
Mutagenesisi503 – 5031A → V: Increases basal level of ATPase activity and abolishes stimulation of ATP hydrolysis upon substrate binding. Inhibits growth at 37 degrees Celsius. 2 Publications
Mutagenesisi509 – 5091A → D: Reduces thermotolerance. 1 Publication
Mutagenesisi557 – 5571P → L: Impairs prion propagation, but does not affect thermotolerance. 1 Publication
Mutagenesisi619 – 6191G → V: Impairs oligomerization at low protein concentrations. 2 Publications
Mutagenesisi620 – 6201K → T: Impairs oligomerization at low protein concentrations. Reduces ATP hydrolysis rate. Unable to confer thermotolerance. Comletely abolishes ATPase activity; when associated with T-218. 9 Publications
Mutagenesisi621 – 6211T → A: Reduces ATP hydrolysis, but does not affect oligomerization. 1 Publication
Mutagenesisi645 – 6451E → K: Abolishes the ability to refold aggregated protein in vitro and to provide thermotolerance in vivo. 1 Publication
Mutagenesisi662 – 6621Y → A or K: Abolishes the ability to refold aggregated protein in vitro and to provide thermotolerance in vivo. 1 Publication
Mutagenesisi662 – 6621Y → F or W: No effect. 1 Publication
Mutagenesisi687 – 6871E → Q in HSP104(TRAP); completely abolishes ATP hydrolysis, but does not affect nucleotide binding, thus keeping HSP104 in an ATP-bound state; when associated with Q-285. 2 Publications
Mutagenesisi704 – 7041D → N: Impairs prion propagation, but does not affect thermotolerance. 1 Publication
Mutagenesisi728 – 7281N → A: Almost completely abolishes ATP hydrolysis at NBD2, but does not affect nucleotide binding, thus keeping NBD2 in an ATP-bound state. Reduces stimulation of ATP hydrolysis upon substrate binding. 4 Publications
Mutagenesisi765 – 7651R → M: Can oligomerize in the absence of nucleotides. 1 Publication
Mutagenesisi778 – 7781K → A in NLS17KA; fails to concentrate in the nucleus; when associated with A-782 and A-789. 1 Publication
Mutagenesisi782 – 7821K → A in NLS17KA; fails to concentrate in the nucleus; when associated with A-778 and A-789. 1 Publication
Mutagenesisi789 – 7891K → A in NLS17KA; fails to concentrate in the nucleus; when associated with A-778 and A-782. 1 Publication
Mutagenesisi819 – 8191Y → W: Site-specific fluorescent probe in an otherwise Trp-less HSP104. Fluorescence of this Trp changes in response to ATP and ADP binding at NBD2. Has no effect on ATP hydrolysis or protein stability. 1 Publication
Mutagenesisi826 – 8261R → M: Reduces ATP and ADP binding at NBD2 6-fold, but does not affect ATP hydrolysis at NBD2. Reduces catalytic rate at NBD1. 1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 908908Heat shock protein 104PRO_0000191212Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei1 – 11N-acetylmethionineCombined sources
Modified residuei206 – 2061PhosphoserineCombined sources
Modified residuei306 – 3061PhosphoserineCombined sources
Cross-linki442 – 442Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)Combined sources
Modified residuei499 – 4991PhosphothreonineCombined sources
Modified residuei535 – 5351PhosphoserineCombined sources
Cross-linki620 – 620Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)1 Publication

Keywords - PTMi

Acetylation, Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

MaxQBiP31539.

2D gel databases

SWISS-2DPAGEP31539.

PTM databases

iPTMnetiP31539.

Expressioni

Inductioni

By heat stress dependent on the heat shock transcription factor HSF1 and the general stress transcription factors MSN2 and MSN4. Expressed at a higher level in respiring cells than in fermenting cells. Expressed in stationary phase cells and spores (at protein level).5 Publications

Interactioni

Subunit structurei

Homohexamer, forming a ring with a central pore. The hexamer is stabilized by high protein concentrations and by ADP or ATP. Oligomerization influences ATP hydrolysis activity at NBD2. Interacts with YDJ1. Interacts (via C-terminal DDLD tetrapeptide) with CNS1, CPR7 and STI1 (via TPR repeats); under respiratory growth conditions.8 Publications

GO - Molecular functioni

  • chaperone binding Source: SGD
  • unfolded protein binding Source: SGD

Protein-protein interaction databases

BioGridi31226. 105 interactions.
DIPiDIP-2252N.
IntActiP31539. 14 interactions.
MINTiMINT-530773.

Structurei

3D structure databases

ProteinModelPortaliP31539.
SMRiP31539. Positions 6-857.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni167 – 411245NBD1Add
BLAST
Regioni541 – 731191NBD2Add
BLAST
Regioni905 – 9084Interaction surface for TPR repeats

Coiled coil

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Coiled coili412 – 536125Sequence analysisAdd
BLAST

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi773 – 78917Nuclear localization signalAdd
BLAST

Domaini

Has 2 AAA ATPase type nucleotide-binding domains (NBDs) per monomer, a low-affinity, high-turnover site (NBD1) and a high-affinity site (NBD2) with a 300-fold slower rate of hydrolysis. There is allosteric regulation between the 2 sites. ATP binding to NBD1 triggers binding of polypeptides and stimulates ATP hydrolysis at NBD2. Nucleotide binding to NBD2 is crucial for oligomerization.
The C-terminal extension is involved in oligomerization.

Sequence similaritiesi

Belongs to the ClpA/ClpB family.Curated

Keywords - Domaini

Coiled coil, Repeat

Phylogenomic databases

GeneTreeiENSGT00390000012961.
HOGENOMiHOG000218211.
InParanoidiP31539.
KOiK03695.
OMAiQFRGAFE.
OrthoDBiEOG092C0JLO.

Family and domain databases

Gene3Di1.10.1780.10. 1 hit.
3.40.50.300. 2 hits.
InterProiIPR003593. AAA+_ATPase.
IPR003959. ATPase_AAA_core.
IPR019489. Clp_ATPase_C.
IPR004176. Clp_N.
IPR001270. ClpA/B.
IPR018368. ClpA/B_CS1.
IPR028299. ClpA/B_CS2.
IPR027417. P-loop_NTPase.
[Graphical view]
PfamiPF00004. AAA. 1 hit.
PF07724. AAA_2. 1 hit.
PF02861. Clp_N. 2 hits.
PF10431. ClpB_D2-small. 1 hit.
[Graphical view]
PRINTSiPR00300. CLPPROTEASEA.
SMARTiSM00382. AAA. 2 hits.
SM01086. ClpB_D2-small. 1 hit.
[Graphical view]
SUPFAMiSSF52540. SSF52540. 2 hits.
SSF81923. SSF81923. 1 hit.
PROSITEiPS00870. CLPAB_1. 1 hit.
PS00871. CLPAB_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P31539-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNDQTQFTER ALTILTLAQK LASDHQHPQL QPIHILAAFI ETPEDGSVPY
60 70 80 90 100
LQNLIEKGRY DYDLFKKVVN RNLVRIPQQQ PAPAEITPSY ALGKVLQDAA
110 120 130 140 150
KIQKQQKDSF IAQDHILFAL FNDSSIQQIF KEAQVDIEAI KQQALELRGN
160 170 180 190 200
TRIDSRGADT NTPLEYLSKY AIDMTEQARQ GKLDPVIGRE EEIRSTIRVL
210 220 230 240 250
ARRIKSNPCL IGEPGIGKTA IIEGVAQRII DDDVPTILQG AKLFSLDLAA
260 270 280 290 300
LTAGAKYKGD FEERFKGVLK EIEESKTLIV LFIDEIHMLM GNGKDDAANI
310 320 330 340 350
LKPALSRGQL KVIGATTNNE YRSIVEKDGA FERRFQKIEV AEPSVRQTVA
360 370 380 390 400
ILRGLQPKYE IHHGVRILDS ALVTAAQLAK RYLPYRRLPD SALDLVDISC
410 420 430 440 450
AGVAVARDSK PEELDSKERQ LQLIQVEIKA LERDEDADST TKDRLKLARQ
460 470 480 490 500
KEASLQEELE PLRQRYNEEK HGHEELTQAK KKLDELENKA LDAERRYDTA
510 520 530 540 550
TAADLRYFAI PDIKKQIEKL EDQVAEEERR AGANSMIQNV VDSDTISETA
560 570 580 590 600
ARLTGIPVKK LSESENEKLI HMERDLSSEV VGQMDAIKAV SNAVRLSRSG
610 620 630 640 650
LANPRQPASF LFLGLSGSGK TELAKKVAGF LFNDEDMMIR VDCSELSEKY
660 670 680 690 700
AVSKLLGTTA GYVGYDEGGF LTNQLQYKPY SVLLFDEVEK AHPDVLTVML
710 720 730 740 750
QMLDDGRITS GQGKTIDCSN CIVIMTSNLG AEFINSQQGS KIQESTKNLV
760 770 780 790 800
MGAVRQHFRP EFLNRISSIV IFNKLSRKAI HKIVDIRLKE IEERFEQNDK
810 820 830 840 850
HYKLNLTQEA KDFLAKYGYS DDMGARPLNR LIQNEILNKL ALRILKNEIK
860 870 880 890 900
DKETVNVVLK KGKSRDENVP EEAEECLEVL PNHEATIGAD TLGDDDNEDS

MEIDDDLD
Length:908
Mass (Da):102,035
Last modified:February 1, 1996 - v2
Checksum:i4AD0E7E3AF98E318
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M67479 Genomic DNA. Translation: AAA50477.1.
Z73131 Genomic DNA. Translation: CAA97475.1.
Z73130 Genomic DNA. Translation: CAA97474.1.
AY693002 Genomic DNA. Translation: AAT93021.1.
X97560 Genomic DNA. Translation: CAA66164.1.
BK006945 Genomic DNA. Translation: DAA09294.1.
PIRiS61476.
RefSeqiNP_013074.1. NM_001181846.1.

Genome annotation databases

EnsemblFungiiYLL026W; YLL026W; YLL026W.
GeneIDi850633.
KEGGisce:YLL026W.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M67479 Genomic DNA. Translation: AAA50477.1.
Z73131 Genomic DNA. Translation: CAA97475.1.
Z73130 Genomic DNA. Translation: CAA97474.1.
AY693002 Genomic DNA. Translation: AAT93021.1.
X97560 Genomic DNA. Translation: CAA66164.1.
BK006945 Genomic DNA. Translation: DAA09294.1.
PIRiS61476.
RefSeqiNP_013074.1. NM_001181846.1.

3D structure databases

ProteinModelPortaliP31539.
SMRiP31539. Positions 6-857.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi31226. 105 interactions.
DIPiDIP-2252N.
IntActiP31539. 14 interactions.
MINTiMINT-530773.

PTM databases

iPTMnetiP31539.

2D gel databases

SWISS-2DPAGEP31539.

Proteomic databases

MaxQBiP31539.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblFungiiYLL026W; YLL026W; YLL026W.
GeneIDi850633.
KEGGisce:YLL026W.

Organism-specific databases

EuPathDBiFungiDB:YLL026W.
SGDiS000003949. HSP104.

Phylogenomic databases

GeneTreeiENSGT00390000012961.
HOGENOMiHOG000218211.
InParanoidiP31539.
KOiK03695.
OMAiQFRGAFE.
OrthoDBiEOG092C0JLO.

Enzyme and pathway databases

BioCyciYEAST:G3O-32130-MONOMER.
SABIO-RKP31539.

Miscellaneous databases

PROiP31539.

Family and domain databases

Gene3Di1.10.1780.10. 1 hit.
3.40.50.300. 2 hits.
InterProiIPR003593. AAA+_ATPase.
IPR003959. ATPase_AAA_core.
IPR019489. Clp_ATPase_C.
IPR004176. Clp_N.
IPR001270. ClpA/B.
IPR018368. ClpA/B_CS1.
IPR028299. ClpA/B_CS2.
IPR027417. P-loop_NTPase.
[Graphical view]
PfamiPF00004. AAA. 1 hit.
PF07724. AAA_2. 1 hit.
PF02861. Clp_N. 2 hits.
PF10431. ClpB_D2-small. 1 hit.
[Graphical view]
PRINTSiPR00300. CLPPROTEASEA.
SMARTiSM00382. AAA. 2 hits.
SM01086. ClpB_D2-small. 1 hit.
[Graphical view]
SUPFAMiSSF52540. SSF52540. 2 hits.
SSF81923. SSF81923. 1 hit.
PROSITEiPS00870. CLPAB_1. 1 hit.
PS00871. CLPAB_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiHS104_YEAST
AccessioniPrimary (citable) accession number: P31539
Secondary accession number(s): D6VXX8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1993
Last sequence update: February 1, 1996
Last modified: September 7, 2016
This is version 155 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

Miscellaneous

Present with 32800 molecules/cell in log phase SD medium.1 Publication

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Yeast
    Yeast (Saccharomyces cerevisiae): entries, gene names and cross-references to SGD
  3. Yeast chromosome XII
    Yeast (Saccharomyces cerevisiae) chromosome XII: entries and gene names

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.