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- PDB-9szv: Co-chaperone Bag1-bound human 26S proteasome in SBAG1.3 state -

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Basic information

Entry
Database: PDB / ID: 9szv
TitleCo-chaperone Bag1-bound human 26S proteasome in SBAG1.3 state
Components
  • (26S protease regulatory subunit ...) x 4
  • (26S proteasome ...) x 13
  • (Proteasome subunit alpha type- ...) x 6
  • (Proteasome subunit beta type- ...) x 7
  • BAG family molecular chaperone regulator 1
  • Isoform 2 of 26S proteasome regulatory subunit 8
  • Isoform Long of Proteasome subunit alpha type-1
KeywordsHYDROLASE / Protein degradation / protease / AAA+ ATPase / Hsp70 / cochaperone / Bag1 / Complex / ubiquitin
Function / homology
Function and homology information


adenyl-nucleotide exchange factor activity / positive regulation of smooth muscle cell apoptotic process / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / thyrotropin-releasing hormone receptor binding / nuclear proteasome complex / host-mediated perturbation of viral transcription / positive regulation of inclusion body assembly / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / integrator complex ...adenyl-nucleotide exchange factor activity / positive regulation of smooth muscle cell apoptotic process / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / thyrotropin-releasing hormone receptor binding / nuclear proteasome complex / host-mediated perturbation of viral transcription / positive regulation of inclusion body assembly / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / integrator complex / proteasome accessory complex / meiosis I / purine ribonucleoside triphosphate binding / proteasome regulatory particle / cytosolic proteasome complex / positive regulation of proteasomal protein catabolic process / proteasome-activating activity / proteasome regulatory particle, lid subcomplex / proteasome regulatory particle, base subcomplex / protein K63-linked deubiquitination / metal-dependent deubiquitinase activity / negative regulation of programmed cell death / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Somitogenesis / K63-linked deubiquitinase activity / Resolution of D-loop Structures through Holliday Junction Intermediates / Impaired BRCA2 binding to RAD51 / proteasome binding / transcription factor binding / regulation of protein catabolic process / myofibril / : / proteasome storage granule / Presynaptic phase of homologous DNA pairing and strand exchange / general transcription initiation factor binding / polyubiquitin modification-dependent protein binding / protein deubiquitination / blastocyst development / Regulation of HSF1-mediated heat shock response / immune system process / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / endopeptidase activator activity / proteasome assembly / threonine-type endopeptidase activity / mRNA export from nucleus / proteasome core complex, alpha-subunit complex / enzyme regulator activity / regulation of proteasomal protein catabolic process / inclusion body / proteasome complex / proteolysis involved in protein catabolic process / TBP-class protein binding / sarcomere / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / stem cell differentiation / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / negative regulation of inflammatory response to antigenic stimulus / Degradation of DVL / Dectin-1 mediated noncanonical NF-kB signaling / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / P-body / lipopolysaccharide binding / Degradation of AXIN / Hh mutants are degraded by ERAD / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / G2/M Checkpoints / Hedgehog ligand biogenesis / Defective CFTR causes cystic fibrosis / Autodegradation of the E3 ubiquitin ligase COP1 / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Regulation of RUNX3 expression and activity / Negative regulation of NOTCH4 signaling / Hedgehog 'on' state / double-strand break repair via homologous recombination / Vif-mediated degradation of APOBEC3G / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Degradation of GLI2 by the proteasome
Similarity search - Function
Molecular chaperone regulator BAG / BAG domain superfamily / BAG domain / BAG domain / BAG domain profile. / BAG domains, present in regulator of Hsp70 proteins / : / Ubiquitin interaction motif / : / 26S proteasome regulatory subunit RPN7/PSMD6 C-terminal helix ...Molecular chaperone regulator BAG / BAG domain superfamily / BAG domain / BAG domain / BAG domain profile. / BAG domains, present in regulator of Hsp70 proteins / : / Ubiquitin interaction motif / : / 26S proteasome regulatory subunit RPN7/PSMD6 C-terminal helix / 26S proteasome non-ATPase regulatory subunit Rpn12 / 26S proteasome regulatory subunit, C-terminal / Proteasome regulatory subunit C-terminal / 26S proteasome regulatory subunit RPN5, C-terminal domain / : / 26S proteasome regulatory subunit RPN5 C-terminal domain / PSD13 N-terminal repeats / 26S proteasome regulatory subunit Rpn6, N-terminal / 6S proteasome subunit Rpn6, C-terminal helix domain / 26S proteasome regulatory subunit RPN6 N-terminal domain / 26S proteasome subunit RPN6 C-terminal helix domain / 26S Proteasome non-ATPase regulatory subunit 13 / : / 26S proteasome subunit RPN2, N-terminal domain / 26S proteasome regulatory complex, non-ATPase subcomplex, Rpn2/Psmd1 subunit / 26S proteasome regulatory subunit RPN2, C-terminal / 26S proteasome regulatory subunit RPN2 C-terminal domain / Proteasome subunit Rpn10 / 26S Proteasome non-ATPase regulatory subunit 7/8 / DSS1/SEM1 / : / DSS1/SEM1 family / 26S proteasome regulatory subunit RPN11 C-terminal domain / DSS1_SEM1 / 26S proteasome regulatory complex, non-ATPase subcomplex, Rpn1 subunit / RPN1, N-terminal / 26S proteasome non-ATPase regulatory subunit RPN1, C-terminal / RPN1 N-terminal domain / 26S proteasome non-ATPase regulatory subunit RPN1 C-terminal / Proteasome/cyclosome repeat / : / 26S proteasome regulatory subunit 7, OB domain / Ubiquitin-interacting motif. / Proteasome/cyclosome repeat / : / : / : / PSMD12/CSN4, N-terminal / 26S proteasome regulatory subunit Rpn7/COP9 signalosome complex subunit 1 / 26S proteasome regulatory subunit Rpn7, N-terminal / 26S proteasome subunit RPN7 / 26S Proteasome non-ATPase regulatory subunit 12/COP9 signalosome complex subunit 4 / von Willebrand factor type A domain / : / PCI/PINT associated module / Proteasomal ATPase OB C-terminal domain / Proteasomal ATPase OB C-terminal domain / HEAT repeats / Proteasome subunit alpha 1 / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / : / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / Ubiquitin interacting motif / Ubiquitin-interacting motif (UIM) domain profile. / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / Proteasome beta subunit, C-terminal / Proteasome beta subunits C terminal / Proteasome subunit beta 4 / Proteasome subunit beta 2 / Proteasome beta 3 subunit / Proteasome subunit alpha5 / Proteasome subunit alpha6 / Proteasome beta-type subunits signature. / Peptidase T1A, proteasome beta-subunit / Proteasome beta-type subunit, conserved site / Proteasome subunit A N-terminal signature / Proteasome alpha-type subunits signature. / Proteasome alpha-subunit, N-terminal domain / Proteasome subunit A N-terminal signature Add an annotation / VWFA domain profile. / von Willebrand factor (vWF) type A domain / Proteasome B-type subunit / Proteasome beta-type subunit profile. / : / Proteasome alpha-type subunit / Proteasome alpha-type subunit profile. / Proteasome subunit / Proteasome, subunit alpha/beta / von Willebrand factor, type A / JAB/MPN domain / JAB1/MPN/MOV34 metalloenzyme domain / AAA ATPase, AAA+ lid domain / AAA+ lid domain / MPN domain
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / 26S proteasome regulatory subunit 10B / 26S proteasome non-ATPase regulatory subunit 11 / 26S proteasome non-ATPase regulatory subunit 12 / 26S proteasome non-ATPase regulatory subunit 14 / Proteasome subunit alpha type-7 / 26S proteasome non-ATPase regulatory subunit 3 / 26S proteasome regulatory subunit 6A / Proteasome subunit beta type-1 ...ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / 26S proteasome regulatory subunit 10B / 26S proteasome non-ATPase regulatory subunit 11 / 26S proteasome non-ATPase regulatory subunit 12 / 26S proteasome non-ATPase regulatory subunit 14 / Proteasome subunit alpha type-7 / 26S proteasome non-ATPase regulatory subunit 3 / 26S proteasome regulatory subunit 6A / Proteasome subunit beta type-1 / Proteasome subunit alpha type-1 / Proteasome subunit alpha type-2 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-4 / Proteasome subunit alpha type-5 / Proteasome subunit beta type-4 / Proteasome subunit beta type-6 / Proteasome subunit beta type-5 / 26S proteasome regulatory subunit 7 / 26S proteasome regulatory subunit 6B / 26S proteasome non-ATPase regulatory subunit 8 / Proteasome subunit beta type-3 / Proteasome subunit beta type-2 / 26S proteasome non-ATPase regulatory subunit 7 / 26S proteasome non-ATPase regulatory subunit 4 / 26S proteasome complex subunit SEM1 / Proteasome subunit alpha type-6 / 26S proteasome regulatory subunit 4 / 26S proteasome regulatory subunit 8 / 26S proteasome non-ATPase regulatory subunit 2 / 26S proteasome non-ATPase regulatory subunit 6 / Proteasome subunit beta type-7 / 26S proteasome non-ATPase regulatory subunit 1 / BAG family molecular chaperone regulator 1 / 26S proteasome non-ATPase regulatory subunit 13
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsCheng, T.C. / Sakata, E. / Muntaner, J. / Maestro-Lopez, M. / Cuellar, J. / Valpuesta, J.M.
Funding support Germany, Spain, 6items
OrganizationGrant numberCountry
German Research Foundation (DFG)154113120 Germany
German Research Foundation (DFG)EXC 2067/1-390729940 Germany
German Research Foundation (DFG)448415290 Germany
Spanish Ministry of Science, Innovation, and UniversitiesPID2022-137175NB-I00 Spain
Spanish Ministry of Science, Innovation, and UniversitiesAEI/10.13039/5011000110 Spain
Spanish Ministry of Science, Innovation, and UniversitiesCEX2023-001386-S Spain
CitationJournal: To Be Published
Title: Structure of the 26S proteasome in complex with cochaperone Bag1
Authors: Maestro-Lopez, M. / Cheng, T.C. / Muntaner, J. / Menedez, M. / Alonso, M. / Schweitzer, A. / Cuellar, J. / Valpuesta, J.M. / Sakata, E.
History
DepositionOct 15, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 31, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
G: Proteasome subunit alpha type-6
H: Proteasome subunit alpha type-2
I: Proteasome subunit alpha type-4
J: Proteasome subunit alpha type-7
L: Isoform Long of Proteasome subunit alpha type-1
M: Proteasome subunit alpha type-3
K: Proteasome subunit alpha type-5
l: Isoform Long of Proteasome subunit alpha type-1
g: Proteasome subunit alpha type-6
h: Proteasome subunit alpha type-2
i: Proteasome subunit alpha type-4
j: Proteasome subunit alpha type-7
k: Proteasome subunit alpha type-5
m: Proteasome subunit alpha type-3
n: Proteasome subunit beta type-6
o: Proteasome subunit beta type-7
p: Proteasome subunit beta type-3
q: Proteasome subunit beta type-2
r: Proteasome subunit beta type-5
s: Proteasome subunit beta type-1
t: Proteasome subunit beta type-4
N: Proteasome subunit beta type-6
O: Proteasome subunit beta type-7
Q: Proteasome subunit beta type-2
P: Proteasome subunit beta type-3
R: Proteasome subunit beta type-5
S: Proteasome subunit beta type-1
T: Proteasome subunit beta type-4
f: 26S proteasome non-ATPase regulatory subunit 2
x: BAG family molecular chaperone regulator 1
a: 26S proteasome non-ATPase regulatory subunit 13
b: 26S proteasome non-ATPase regulatory subunit 4
c: 26S proteasome non-ATPase regulatory subunit 14
d: 26S proteasome non-ATPase regulatory subunit 8
e: 26S proteasome complex subunit SEM1
U: 26S proteasome non-ATPase regulatory subunit 1
V: 26S proteasome non-ATPase regulatory subunit 3
X: 26S proteasome non-ATPase regulatory subunit 11
Y: 26S proteasome non-ATPase regulatory subunit 6
Z: 26S proteasome non-ATPase regulatory subunit 7
W: 26S proteasome non-ATPase regulatory subunit 12
A: 26S protease regulatory subunit 7
B: 26S protease regulatory subunit 4
C: Isoform 2 of 26S proteasome regulatory subunit 8
D: 26S protease regulatory subunit 6B
E: 26S proteasome regulatory subunit 10B
F: 26S protease regulatory subunit 6A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,693,89153
Polymers1,691,24747
Non-polymers2,6436
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Proteasome subunit alpha type- ... , 6 types, 12 molecules GgHhIiJjMmKk

#1: Protein Proteasome subunit alpha type-6 / 27 kDa prosomal protein / p27K / Macropain iota chain / Multicatalytic endopeptidase complex iota ...27 kDa prosomal protein / p27K / Macropain iota chain / Multicatalytic endopeptidase complex iota chain / Proteasome iota chain


Mass: 27432.459 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60900
#2: Protein Proteasome subunit alpha type-2 / Macropain subunit C3 / Multicatalytic endopeptidase complex subunit C3 / Proteasome component C3


Mass: 25927.535 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25787
#3: Protein Proteasome subunit alpha type-4 / Macropain subunit C9 / Multicatalytic endopeptidase complex subunit C9 / Proteasome component C9 / ...Macropain subunit C9 / Multicatalytic endopeptidase complex subunit C9 / Proteasome component C9 / Proteasome subunit L


Mass: 29525.842 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25789
#4: Protein Proteasome subunit alpha type-7 / Proteasome subunit RC6-1 / Proteasome subunit XAPC7


Mass: 27929.891 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14818
#6: Protein Proteasome subunit alpha type-3 / Macropain subunit C8 / Multicatalytic endopeptidase complex subunit C8 / Proteasome component C8


Mass: 28469.252 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25788
#7: Protein Proteasome subunit alpha type-5 / Macropain zeta chain / Multicatalytic endopeptidase complex zeta chain / Proteasome zeta chain


Mass: 26435.977 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P28066

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Protein , 3 types, 4 molecules LlxC

#5: Protein Isoform Long of Proteasome subunit alpha type-1 / 30 kDa prosomal protein / PROS-30 / Macropain subunit C2 / Multicatalytic endopeptidase complex ...30 kDa prosomal protein / PROS-30 / Macropain subunit C2 / Multicatalytic endopeptidase complex subunit C2 / Proteasome component C2 / Proteasome nu chain / Proteasome subunit alpha-6 / alpha-6


Mass: 30281.473 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25786
#16: Protein BAG family molecular chaperone regulator 1 / BAG-1 / Bcl-2-associated athanogene 1


Mass: 26024.699 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BAG1, HAP / Production host: Escherichia coli (E. coli) / References: UniProt: Q99933
#30: Protein Isoform 2 of 26S proteasome regulatory subunit 8 / 26S proteasome AAA-ATPase subunit RPT6 / Proteasome 26S subunit ATPase 5 / Proteasome subunit p45 / ...26S proteasome AAA-ATPase subunit RPT6 / Proteasome 26S subunit ATPase 5 / Proteasome subunit p45 / Thyroid hormone receptor-interacting protein 1 / TRIP1 / p45/SUG


Mass: 44852.121 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62195

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Proteasome subunit beta type- ... , 7 types, 14 molecules nNoOpPqQrRsStT

#8: Protein Proteasome subunit beta type-6 / Macropain delta chain / Multicatalytic endopeptidase complex delta chain / Proteasome delta chain / ...Macropain delta chain / Multicatalytic endopeptidase complex delta chain / Proteasome delta chain / Proteasome subunit Y


Mass: 25377.652 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P28072, proteasome endopeptidase complex
#9: Protein Proteasome subunit beta type-7 / Macropain chain Z / Multicatalytic endopeptidase complex chain Z / Proteasome subunit Z


Mass: 30000.418 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: Q99436, proteasome endopeptidase complex
#10: Protein Proteasome subunit beta type-3 / Proteasome chain 13 / Proteasome component C10-II / Proteasome theta chain


Mass: 22972.896 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P49720, proteasome endopeptidase complex
#11: Protein Proteasome subunit beta type-2 / Macropain subunit C7-I / Multicatalytic endopeptidase complex subunit C7-I / Proteasome component C7-I


Mass: 22864.277 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P49721, proteasome endopeptidase complex
#12: Protein Proteasome subunit beta type-5 / Macropain epsilon chain / Multicatalytic endopeptidase complex epsilon chain / Proteasome chain 6 / ...Macropain epsilon chain / Multicatalytic endopeptidase complex epsilon chain / Proteasome chain 6 / Proteasome epsilon chain / Proteasome subunit MB1 / Proteasome subunit X


Mass: 28510.248 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P28074, proteasome endopeptidase complex
#13: Protein Proteasome subunit beta type-1 / Macropain subunit C5 / Multicatalytic endopeptidase complex subunit C5 / Proteasome component C5 / ...Macropain subunit C5 / Multicatalytic endopeptidase complex subunit C5 / Proteasome component C5 / Proteasome gamma chain


Mass: 26522.396 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P20618, proteasome endopeptidase complex
#14: Protein Proteasome subunit beta type-4 / 26 kDa prosomal protein / PROS-26 / Macropain beta chain / Multicatalytic endopeptidase complex ...26 kDa prosomal protein / PROS-26 / Macropain beta chain / Multicatalytic endopeptidase complex beta chain / Proteasome beta chain / Proteasome chain 3 / HsN3


Mass: 29231.178 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: P28070, proteasome endopeptidase complex

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26S proteasome ... , 13 types, 13 molecules fabcdeUVXYZWE

#15: Protein 26S proteasome non-ATPase regulatory subunit 2 / 26S proteasome regulatory subunit RPN1 / 26S proteasome regulatory subunit S2 / 26S proteasome ...26S proteasome regulatory subunit RPN1 / 26S proteasome regulatory subunit S2 / 26S proteasome subunit p97 / Protein 55.11 / Tumor necrosis factor type 1 receptor-associated protein 2


Mass: 100313.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13200
#17: Protein 26S proteasome non-ATPase regulatory subunit 13 / 26S proteasome regulatory subunit RPN9 / 26S proteasome regulatory subunit S11 / 26S proteasome ...26S proteasome regulatory subunit RPN9 / 26S proteasome regulatory subunit S11 / 26S proteasome regulatory subunit p40.5


Mass: 42995.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UNM6
#18: Protein 26S proteasome non-ATPase regulatory subunit 4 / 26S proteasome regulatory subunit RPN10 / 26S proteasome regulatory subunit S5A / Antisecretory ...26S proteasome regulatory subunit RPN10 / 26S proteasome regulatory subunit S5A / Antisecretory factor 1 / ASF / Multiubiquitin chain-binding protein


Mass: 40781.590 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P55036
#19: Protein 26S proteasome non-ATPase regulatory subunit 14 / 26S proteasome regulatory subunit RPN11 / 26S proteasome-associated PAD1 homolog 1


Mass: 34620.023 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: O00487, Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases
#20: Protein 26S proteasome non-ATPase regulatory subunit 8 / 26S proteasome regulatory subunit RPN12 / 26S proteasome regulatory subunit S14 / p31


Mass: 39667.871 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P48556
#21: Protein 26S proteasome complex subunit SEM1 / 26S proteasome complex subunit DSS1 / Deleted in split hand/split foot protein 1 / Split hand/foot ...26S proteasome complex subunit DSS1 / Deleted in split hand/split foot protein 1 / Split hand/foot deleted protein 1 / Split hand/foot malformation type 1 protein


Mass: 8284.611 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60896
#22: Protein 26S proteasome non-ATPase regulatory subunit 1 / 26S proteasome regulatory subunit RPN2 / 26S proteasome regulatory subunit S1 / 26S proteasome subunit p112


Mass: 105958.234 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99460
#23: Protein 26S proteasome non-ATPase regulatory subunit 3 / 26S proteasome regulatory subunit RPN3 / 26S proteasome regulatory subunit S3 / Proteasome subunit p58


Mass: 61066.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43242
#24: Protein 26S proteasome non-ATPase regulatory subunit 11 / 26S proteasome regulatory subunit RPN6 / 26S proteasome regulatory subunit S9 / 26S proteasome ...26S proteasome regulatory subunit RPN6 / 26S proteasome regulatory subunit S9 / 26S proteasome regulatory subunit p44.5


Mass: 47526.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00231
#25: Protein 26S proteasome non-ATPase regulatory subunit 6 / 26S proteasome regulatory subunit RPN7 / 26S proteasome regulatory subunit S10 / Breast cancer- ...26S proteasome regulatory subunit RPN7 / 26S proteasome regulatory subunit S10 / Breast cancer-associated protein SGA-113M / Phosphonoformate immuno-associated protein 4 / Proteasome regulatory particle subunit p44S10 / p42A


Mass: 45592.285 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q15008
#26: Protein 26S proteasome non-ATPase regulatory subunit 7 / 26S proteasome regulatory subunit RPN8 / 26S proteasome regulatory subunit S12 / Mov34 protein ...26S proteasome regulatory subunit RPN8 / 26S proteasome regulatory subunit S12 / Mov34 protein homolog / Proteasome subunit p40


Mass: 37086.441 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P51665
#27: Protein 26S proteasome non-ATPase regulatory subunit 12 / 26S proteasome regulatory subunit RPN5 / 26S proteasome regulatory subunit p55


Mass: 52979.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00232
#32: Protein 26S proteasome regulatory subunit 10B


Mass: 45881.055 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: A0A087X2I1

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26S protease regulatory subunit ... , 4 types, 4 molecules ABDF

#28: Protein 26S protease regulatory subunit 7 / 26S proteasome AAA-ATPase subunit RPT1 / Proteasome 26S subunit ATPase 2 / Protein MSS1


Mass: 48700.805 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P35998
#29: Protein 26S protease regulatory subunit 4 / P26s4 / 26S proteasome AAA-ATPase subunit RPT2 / Proteasome 26S subunit ATPase 1


Mass: 49260.504 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62191
#31: Protein 26S protease regulatory subunit 6B / 26S proteasome AAA-ATPase subunit RPT3 / MB67-interacting protein / MIP224 / Proteasome 26S subunit ...26S proteasome AAA-ATPase subunit RPT3 / MB67-interacting protein / MIP224 / Proteasome 26S subunit ATPase 4 / Tat-binding protein 7 / TBP-7


Mass: 47426.141 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P43686
#33: Protein 26S protease regulatory subunit 6A / 26S proteasome AAA-ATPase subunit RPT5 / Proteasome 26S subunit ATPase 3 / Proteasome subunit P50 / ...26S proteasome AAA-ATPase subunit RPT5 / Proteasome 26S subunit ATPase 3 / Proteasome subunit P50 / Tat-binding protein 1 / TBP-1


Mass: 49266.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P17980

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Non-polymers , 2 types, 6 molecules

#34: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP, energy-carrying molecule*YM
#35: Chemical
ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM

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Details

Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Co-chaperone Bag1-bound human 26S proteasome in SBAG1.3 state
Type: COMPLEX / Entity ID: #1-#33 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.6
Buffer component
IDConc.NameBuffer-ID
120 mMHepes1
2150 mMPotassium chloride1
31 mMDithiothreitol1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER/RHODIUM / Grid type: Quantifoil R2/2
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 37 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1crYOLOparticle selection
2PHENIX1.21_5207:model refinement
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 19267 / Symmetry type: POINT

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