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- PDB-8jrt: Cryo-EM structure of human 26S proteasomal RP subcomplex (Ea stat... -

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Basic information

Entry
Database: PDB / ID: 8jrt
TitleCryo-EM structure of human 26S proteasomal RP subcomplex (Ea state) bound to K11/K48-branched ubiquitin (Ub) chain composed of three Ub.
Components
  • (26S protease regulatory subunit ...) x 6
  • (26S proteasome non-ATPase regulatory subunit ...) x 11
  • (Proteasome subunit alpha type- ...) x 7
  • 26S proteasome complex subunit DSS1
  • Polyubiquitin-B
KeywordsCYTOSOLIC PROTEIN / protein degradation / macromolecular complex / ubiquitin-proteasome system
Function / homology
Function and homology information


thyrotropin-releasing hormone receptor binding / nuclear proteasome complex / host-mediated perturbation of viral transcription / positive regulation of inclusion body assembly / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / proteasome accessory complex / integrator complex / purine ribonucleoside triphosphate binding ...thyrotropin-releasing hormone receptor binding / nuclear proteasome complex / host-mediated perturbation of viral transcription / positive regulation of inclusion body assembly / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / proteasome accessory complex / integrator complex / purine ribonucleoside triphosphate binding / meiosis I / 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 / hypothalamus gonadotrophin-releasing hormone neuron development / metal-dependent deubiquitinase activity / protein K63-linked deubiquitination / negative regulation of programmed cell death / female meiosis I / Regulation of ornithine decarboxylase (ODC) / positive regulation of protein monoubiquitination / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / fat pad development / proteasome core complex / mitochondrion transport along microtubule / 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 / Resolution of D-loop Structures through Holliday Junction Intermediates / K63-linked deubiquitinase activity / female gonad development / Impaired BRCA2 binding to RAD51 / seminiferous tubule development / proteasome binding / transcription factor binding / regulation of protein catabolic process / myofibril / male meiosis I / proteasome storage granule / Presynaptic phase of homologous DNA pairing and strand exchange / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / general transcription initiation factor binding / blastocyst development / positive regulation of RNA polymerase II transcription preinitiation complex assembly / polyubiquitin modification-dependent protein binding / immune system process / protein deubiquitination / NF-kappaB binding / endopeptidase activator activity / mRNA export from nucleus / proteasome assembly / proteasome core complex, alpha-subunit complex / energy homeostasis / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / regulation of neuron apoptotic process / neuron projection morphogenesis / enzyme regulator activity / regulation of proteasomal protein catabolic process / ERAD pathway / Maturation of protein E / Maturation of protein E / inclusion body / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Endosomal Sorting Complex Required For Transport (ESCRT) / Membrane binding and targetting of GAG proteins / Negative regulation of FLT3 / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Downregulation of ERBB4 signaling / Regulation of FZD by ubiquitination / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / NF-kB is activated and signals survival / Regulation of innate immune responses to cytosolic DNA
Similarity search - Function
: / 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 ...: / 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 / : / 26S proteasome regulatory subunit RPN11 C-terminal domain / Proteasome subunit Rpn10 / 26S Proteasome non-ATPase regulatory subunit 7/8 / DSS1/SEM1 / DSS1/SEM1 family / 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 / : / 26S proteasome regulatory subunit 7, OB domain / : / : / : / 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 / Proteasome/cyclosome repeat / Ubiquitin-interacting motif. / Proteasome/cyclosome repeat / : / PCI/PINT associated module / von Willebrand factor type A domain / Proteasomal ATPase OB C-terminal domain / Proteasomal ATPase OB C-terminal domain / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / Proteasome subunit alpha 1 / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / HEAT repeats / : / 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 subunit alpha5 / Proteasome subunit alpha6 / 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 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 / MPN domain / MPN domain profile. / AAA ATPase, AAA+ lid domain / AAA+ lid domain / ATPase, AAA-type, conserved site / AAA-protein family signature. / Nucleophile aminohydrolases, N-terminal / von Willebrand factor A-like domain superfamily / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Armadillo-like helical / Ubiquitin family / Ubiquitin homologues / Tetratricopeptide-like helical domain superfamily
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / 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 / Polyubiquitin-B / 26S proteasome regulatory subunit 6A / Proteasome subunit alpha type-1 ...ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / 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 / Polyubiquitin-B / 26S proteasome regulatory subunit 6A / 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 / 26S proteasome regulatory subunit 7 / 26S proteasome regulatory subunit 6B / 26S proteasome non-ATPase regulatory subunit 8 / 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 regulatory subunit 10B / 26S proteasome non-ATPase regulatory subunit 2 / 26S proteasome non-ATPase regulatory subunit 6 / 26S proteasome non-ATPase regulatory subunit 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
AuthorsHsu, S.T.D. / Draczkowski, P. / Wang, Y.S.
Funding support Taiwan, 4items
OrganizationGrant numberCountry
Academia Sinica (Taiwan)AS-CDA-109- L08 Taiwan
Ministry of Science and Technology (MoST, Taiwan)MOST 109-3114-Y-001-001 Taiwan
Ministry of Science and Technology (MoST, Taiwan)MOST 110-2113-M-001- 050-MY3 Taiwan
Ministry of Science and Technology (MoST, Taiwan)MOST 110-2311-B-001-013-MY3 Taiwan
CitationJournal: Nat Commun / Year: 2025
Title: Structural basis of K11/K48-branched ubiquitin chain recognition by the human 26S proteasome.
Authors: Piotr Draczkowski / Szu-Ni Chen / Ting Chen / Yong-Sheng Wang / Hsin-An Shih / Jessica Y C Huang / Ming-Chieh Tsai / Shu-Yu Lin / Steven Lin / Rosa Viner / Yuan-Chih Chang / Kuen-Phon Wu / ...Authors: Piotr Draczkowski / Szu-Ni Chen / Ting Chen / Yong-Sheng Wang / Hsin-An Shih / Jessica Y C Huang / Ming-Chieh Tsai / Shu-Yu Lin / Steven Lin / Rosa Viner / Yuan-Chih Chang / Kuen-Phon Wu / Shang-Te Danny Hsu /
Abstract: Beyond the canonical K48-linked homotypic polyubiquitination for proteasome-targeted proteolysis, K11/K48-branched ubiquitin (Ub) chains are involved in fast-tracking protein turnover during cell ...Beyond the canonical K48-linked homotypic polyubiquitination for proteasome-targeted proteolysis, K11/K48-branched ubiquitin (Ub) chains are involved in fast-tracking protein turnover during cell cycle progression and proteotoxic stress. Here, we report cryo-EM structures of human 26S proteasome in a complex with a K11/K48-branched Ub chain. The structures revealed a multivalent substrate recognition mechanism involving a hitherto unknown K11-linked Ub binding site at the groove formed by RPN2 and RPN10 in addition to the canonical K48-linkage binding site formed by RPN10 and RPT4/5 coiled-coil. Additionally, RPN2 recognizes an alternating K11-K48-linkage through a conserved motif similar to the K48-specific T1 binding site of RPN1. The insights gleaned from these structures explain the molecular mechanism underlying the recognition of the K11/K48-branched Ub as a priority signal in the ubiquitin-mediated proteasomal degradation.
History
DepositionJun 17, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Dec 18, 2024Provider: repository / Type: Initial release
Revision 1.1Nov 5, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 26S protease regulatory subunit 7
B: 26S protease regulatory subunit 4
C: 26S protease regulatory subunit 8
D: 26S protease regulatory subunit 6B
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
L: Proteasome subunit alpha type-1
M: Proteasome subunit alpha type-3
V: 26S proteasome non-ATPase regulatory subunit 3
W: 26S proteasome non-ATPase regulatory subunit 12
X: 26S proteasome non-ATPase regulatory subunit 11
Y: 26S proteasome non-ATPase regulatory subunit 6
d: 26S proteasome non-ATPase regulatory subunit 8
e: 26S proteasome complex subunit DSS1
f: 26S proteasome non-ATPase regulatory subunit 2
E: 26S protease regulatory subunit 10B
F: 26S protease regulatory subunit 6A
U: 26S proteasome non-ATPase regulatory subunit 1
Z: 26S proteasome non-ATPase regulatory subunit 7
a: 26S proteasome non-ATPase regulatory subunit 13
b: 26S proteasome non-ATPase regulatory subunit 4
c: 26S proteasome non-ATPase regulatory subunit 14
v: Polyubiquitin-B
u: Polyubiquitin-B
w: Polyubiquitin-B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,126,63339
Polymers1,123,62928
Non-polymers3,00511
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: mass spectrometry, native gel electrophoresis, electron microscopy, negative stain TEM, cross-linking
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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26S protease regulatory subunit ... , 6 types, 6 molecules ABCDEF

#1: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMC2, MSS1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P35998
#2: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMC1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P62191
#3: Protein 26S protease 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: 45694.047 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMC5, SUG1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P62195
#4: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMC4, MIP224, TBP7 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P43686
#19: Protein 26S protease regulatory subunit 10B / 26S proteasome AAA-ATPase subunit RPT4 / Proteasome 26S subunit ATPase 6 / Proteasome subunit p42


Mass: 44241.008 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMC6, SUG2 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P62333
#20: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMC3, TBP1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P17980

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Proteasome subunit alpha type- ... , 7 types, 7 molecules GHIJKLM

#5: 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.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA6, PROS27 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: P60900, proteasome endopeptidase complex
#6: Protein Proteasome subunit alpha type-2 / Macropain subunit C3 / Multicatalytic endopeptidase complex subunit C3 / Proteasome component C3


Mass: 25927.535 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA2, HC3, PSC3 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: P25787, proteasome endopeptidase complex
#7: 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.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA4, HC9, PSC9 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: P25789, proteasome endopeptidase complex
#8: Protein Proteasome subunit alpha type-7 / Proteasome subunit RC6-1 / Proteasome subunit XAPC7


Mass: 27929.891 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA7, HSPC / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: O14818, proteasome endopeptidase complex
#9: Protein Proteasome subunit alpha type-5 / Macropain zeta chain / Multicatalytic endopeptidase complex zeta chain / Proteasome zeta chain


Mass: 26435.977 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA5 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: P28066, proteasome endopeptidase complex
#10: Protein 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


Mass: 29595.627 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA1, HC2, NU, PROS30, PSC2 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: P25786, proteasome endopeptidase complex
#11: Protein Proteasome subunit alpha type-3 / Macropain subunit C8 / Multicatalytic endopeptidase complex subunit C8 / Proteasome component C8


Mass: 28469.252 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA3, HC8, PSC8 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P25788

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26S proteasome non-ATPase regulatory subunit ... , 11 types, 11 molecules VWXYdfUZabc

#12: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD3 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: O43242
#13: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD12 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: O00232
#14: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD11 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: O00231
#15: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD6, KIAA0107, PFAAP4 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: Q15008
#16: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD8 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P48556
#18: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD2, TRAP2 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: Q13200
#21: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: Q99460
#22: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD7, MOV34L / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P51665
#23: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD13 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: Q9UNM6
#24: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD4, MCB1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P55036
#25: 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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMD14, POH1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human)
References: UniProt: O00487, Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases

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Protein , 2 types, 4 molecules evuw

#17: Protein 26S proteasome complex subunit DSS1 / Deleted in split hand/split foot protein 1 / Split hand/foot deleted protein 1 / Split hand/foot ...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 genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SHFM1, DSS1, SHFDG1 / Cell line (production host): HEK293 / Organ (production host): Kidney / Production host: Homo sapiens (human) / References: UniProt: P60896
#26: Protein Polyubiquitin-B


Mass: 8950.154 Da / Num. of mol.: 3 / Mutation: K63R
Source method: isolated from a genetically manipulated source
Details: GSGGS linker sequence remaining at C-terminus after TEV cleavage
Source: (gene. exp.) Homo sapiens (human) / Gene: UBB / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): Codon Plus RIL / References: UniProt: P0CG47

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Non-polymers , 3 types, 11 molecules

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


Mass: 507.181 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP, energy-carrying molecule*YM
#28: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#29: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 2 / 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 modificationY

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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

Component
IDNameTypeDetailsEntity IDParent-IDSource
1Human 26S proteasomeCOMPLEXImages of double-capped (RP-CP-RP) 26S proteasome particles were split in half. After combining with subset of single-capped (RP-CP) complexes the signal in particle images was partially subtracted leaving only the signal of 19S RP together with alpha subunits of the 20S CP proteasomal subcomplex.#1-#260RECOMBINANT
219S regulatory particle (RP) of human 26S proteasomeCOMPLEX#1-#4, #12-#251RECOMBINANT
3AAA+-ATPase of 19S regulatory particle (RP) of human 26S proteasomeCOMPLEX#1-#4, #24-#252RECOMBINANT
4alpha subunits belonging to the 20S core particle (CP) of human 26S proteasomeCOMPLEX#5-#111RECOMBINANT
5K11/K48-branched ubiquitin (Ub) chain composed of three UbCOMPLEX#261RECOMBINANT
Molecular weight
IDEntity assembly-IDValue (°)Experimental value
112.5 MDaNO
21NO
31NO
41NO
51NO
65
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Homo sapiens (human)9606
43Homo sapiens (human)9606
54Homo sapiens (human)9606
65Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-IDStrainCell
21Homo sapiens (human)9606HEK-293
32Homo sapiens (human)9606HEK-293
43Homo sapiens (human)9606HEK-293
54Homo sapiens (human)9606HEK-293
65Escherichia coli BL21(DE3) (bacteria)469008Codon Plus RIL
Buffer solutionpH: 7.6
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMHEPESC8H18N2O4S1
240 mMsodium chlorideNaCl1
35 mMmagnesium chlorideMgCl21
42 mM2-MercaptoethanolC2H6OS1
50.5 mM1,10-PhenanthrolineC12H8N21
62 mMadenosine triphosphateC10H16N5O13P31
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: The complex was additionally supplemented with an excess of preformed and SEC-purified RPN13:UCHL5 complex.
Specimen supportDetails: 20 mA / Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K / Details: incubation time= 3 s blotting time= 2.5 s

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 70000 X / Nominal defocus max: 1800 nm / Nominal defocus min: 1200 nm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 1.8 sec. / Electron dose: 49 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 3 / Num. of real images: 15242
EM imaging opticsEnergyfilter slit width: 20 eV

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Processing

EM software
IDNameVersionCategoryDetails
1Topazparticle selection
2EPUimage acquisitiondata collection
4CTFFIND4.1CTF correction
7UCSF ChimeraX1.3model fitting
9ISOLDEmodel refinement
10PHENIX1.19.2model refinement
11Coot0.9.4.1 ELmodel refinement
12RELION3.1initial Euler assignment
13cryoSPARC3.1final Euler assignment
14cryoSPARC3.1classification
15cryoSPARC3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 2695911
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 54794 / Algorithm: FOURIER SPACE
Details: Performed in cryoSPARC using Non-uniform Refinment and Local Refinment job types.
Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingB value: 121.58 / Protocol: OTHER / Space: REAL / Target criteria: 0.83
Atomic model buildingPDB-ID: 6MSB

6msb


Accession code: 6MSB / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00667755
ELECTRON MICROSCOPYf_angle_d0.73591887
ELECTRON MICROSCOPYf_dihedral_angle_d14.05224259
ELECTRON MICROSCOPYf_chiral_restr0.04710718
ELECTRON MICROSCOPYf_plane_restr0.00612016

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