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- EMDB-15774: p97 with I3 substrate in channel -

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Basic information

Entry
Database: EMDB / ID: EMD-15774
Titlep97 with I3 substrate in channel
Map datap97 map plus I3 substrate in channel
Sample
  • Complex: p97 - substrate complex, map of p97 with part of I3 in channel only
    • Complex: p97, SDS22, PP1 gamma and I3
      • Protein or peptide: p97
      • Protein or peptide: SDS22
      • Protein or peptide: PP1 gamma
      • Protein or peptide: I3
    • Complex: p37
      • Protein or peptide: p37
KeywordsAAA+ ATPase / p97 / VCP / Cdc48 / unfoldase / protein phosphatase-1 / protein maturation / CHAPERONE
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.32 Å
AuthorsSaibil HR / van den Boom J / Marini G / Meyer H
Funding support United Kingdom, 3 items
OrganizationGrant numberCountry
Wellcome Trust106249/Z/14/Z United Kingdom
Wellcome Trust202679/Z/16/Z United Kingdom
Wellcome Trust206166/Z/17/Z United Kingdom
CitationJournal: EMBO J / Year: 2023
Title: Structural basis of ubiquitin-independent PP1 complex disassembly by p97.
Authors: Johannes van den Boom / Guendalina Marini / Hemmo Meyer / Helen R Saibil /
Abstract: The AAA+-ATPase p97 (also called VCP or Cdc48) unfolds proteins and disassembles protein complexes in numerous cellular processes, but how substrate complexes are loaded onto p97 and disassembled is ...The AAA+-ATPase p97 (also called VCP or Cdc48) unfolds proteins and disassembles protein complexes in numerous cellular processes, but how substrate complexes are loaded onto p97 and disassembled is unclear. Here, we present cryo-EM structures of p97 in the process of disassembling a protein phosphatase-1 (PP1) complex by extracting an inhibitory subunit from PP1. We show that PP1 and its partners SDS22 and inhibitor-3 (I3) are loaded tightly onto p97, surprisingly via a direct contact of SDS22 with the p97 N-domain. Loading is assisted by the p37 adapter that bridges two adjacent p97 N-domains underneath the substrate complex. A stretch of I3 is threaded into the central channel of the spiral-shaped p97 hexamer, while other elements of I3 are still attached to PP1. Thus, our data show how p97 arranges a protein complex between the p97 N-domain and central channel, suggesting a hold-and-extract mechanism for p97-mediated disassembly.
History
DepositionSep 6, 2022-
Header (metadata) releaseJun 7, 2023-
Map releaseJun 7, 2023-
UpdateJul 26, 2023-
Current statusJul 26, 2023Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_15774.png

Downloads & links

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Map

FileDownload / File: emd_15774.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationp97 map plus I3 substrate in channel
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.1 Å/pix.
x 320 pix.
= 352. Å		1.1 Å/pix.
x 320 pix.
= 352. Å		1.1 Å/pix.
x 320 pix.
= 352. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.1 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.007
Minimum - Maximum-0.0055460026 - 0.028486283
Average (Standard dev.)0.0000948166 (±0.00134716)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 352.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Half map 2 unmasked

Fileemd_15774_half_map_1.map
AnnotationHalf map 2 unmasked
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map 1 unmasked

Fileemd_15774_half_map_2.map
AnnotationHalf map 1 unmasked
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : p97 - substrate complex, map of p97 with part of I3 in channel only

EntireName: p97 - substrate complex, map of p97 with part of I3 in channel only
Components
  • Complex: p97 - substrate complex, map of p97 with part of I3 in channel only
    • Complex: p97, SDS22, PP1 gamma and I3
      • Protein or peptide: p97
      • Protein or peptide: SDS22
      • Protein or peptide: PP1 gamma
      • Protein or peptide: I3
    • Complex: p37
      • Protein or peptide: p37

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Supramolecule #1: p97 - substrate complex, map of p97 with part of I3 in channel only

SupramoleculeName: p97 - substrate complex, map of p97 with part of I3 in channel only
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: p97, SDS22, PP1 gamma and I3

SupramoleculeName: p97, SDS22, PP1 gamma and I3 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#4
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #3: p37

SupramoleculeName: p37 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: p97

MacromoleculeName: p97 / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO / EC number: vesicle-fusing ATPase
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MASGADSKGD DLSTAILKQK NRPNRLIVDE AINEDNSVVS LSQPKMDELQ LFRGDTVLLK GKKRREAVCI VLSDDTCSDE KIRMNRVVRN NLRVRLGDVI SIQPCPDVKY GKRIHVLPID DTVEGITGNL FEVYLKPYFL EAYRPIRKGD IFLVRGGMRA VEFKVVETDP ...String:
MASGADSKGD DLSTAILKQK NRPNRLIVDE AINEDNSVVS LSQPKMDELQ LFRGDTVLLK GKKRREAVCI VLSDDTCSDE KIRMNRVVRN NLRVRLGDVI SIQPCPDVKY GKRIHVLPID DTVEGITGNL FEVYLKPYFL EAYRPIRKGD IFLVRGGMRA VEFKVVETDP SPYCIVAPDT VIHCEGEPIK REDEEESLNE VGYDDIGGCR KQLAQIKEMV ELPLRHPALF KAIGVKPPRG ILLYGPPGTG KTLIARAVAN ETGAFFFLIN GPEIMSKLAG ESESNLRKAF EEAEKNAPAI IFIDELDAIA PKREKTHGEV ERRIVSQLLT LMDGLKQRAH VIVMAATNRP NSIDPALRRF GRFDREVDIG IPDATGRLEI LQIHTKNMKL ADDVDLEQVA NETHGHVGAD LAALCSEAAL QAIRKKMDLI DLEDETIDAE VMNSLAVTMD DFRWALSQSN PSALRETVVE VPQVTWEDIG GLEDVKRELQ ELVQYPVEHP DKFLKFGMTP SKGVLFYGPP GCGKTLLAKA IANECQANFI SIKGPELLTM WFGESEANVR EIFDKARQAA PCVLFFDELD SIAKARGGNI GDGGGAADRV INQILTEMDG MSTKKNVFII GATNRPDIID PAILRPGRLD QLIYIPLPDE KSRVAILKAN LRKSPVAKDV DLEFLAKMTN GFSGADLTEI CQRACKLAIR ESIESEIRRE RERQTNPSAM EVEEDDPVPE IRRDHFEEAM RFARRSVSDN DIRKYEMFAQ TLQQSRGFGS FRFPSGNQGG AGPSQGSGGG TGGSVYTEDN DDDLYG

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Macromolecule #2: SDS22

MacromoleculeName: SDS22 / type: protein_or_peptide / ID: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MAAERGAGQQ QSQEMMEVDR RVESEESGDE EGKKHSSGIV ADLSEQSLKD GEERGEEDPE EEHELPVDME TINLDRDAED VDLNHYRIGK IEGFEVLKKV KTLCLRQNLI KCIENLEELQ SLRELDLYDN QIKKIENLEA LTELEILDIS FNLLRNIEGV DKLTRLKKLF ...String:
MAAERGAGQQ QSQEMMEVDR RVESEESGDE EGKKHSSGIV ADLSEQSLKD GEERGEEDPE EEHELPVDME TINLDRDAED VDLNHYRIGK IEGFEVLKKV KTLCLRQNLI KCIENLEELQ SLRELDLYDN QIKKIENLEA LTELEILDIS FNLLRNIEGV DKLTRLKKLF LVNNKISKIE NLSNLHQLQM LELGSNRIRA IENIDTLTNL ESLFLGKNKI TKLQNLDALT NLTVLSMQSN RLTKIEGLQN LVNLRELYLS HNGIEVIEGL ENNNKLTMLD IASNRIKKIE NISHLTELQE FWMNDNLLES WSDLDELKGA RSLETVYLER NPLQKDPQYR RKVMLALPSV RQIDATFVRF

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Macromolecule #3: PP1 gamma

MacromoleculeName: PP1 gamma / type: protein_or_peptide / ID: 3 / Enantiomer: LEVO / EC number: protein-serine/threonine phosphatase
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MADLDKLNID SIIQRLLEVR GSKPGKNVQL QENEIRGLCL KSREIFLSQP ILLELEAPLK ICGDIHGQYY DLLRLFEYGG FPPESNYLFL GDYVDRGKQS LETICLLLAY KIKYPENFFL LRGNHECASI NRIYGFYDEC KRRYNIKLWK TFTDCFNCLP IAAIVDEKIF ...String:
MADLDKLNID SIIQRLLEVR GSKPGKNVQL QENEIRGLCL KSREIFLSQP ILLELEAPLK ICGDIHGQYY DLLRLFEYGG FPPESNYLFL GDYVDRGKQS LETICLLLAY KIKYPENFFL LRGNHECASI NRIYGFYDEC KRRYNIKLWK TFTDCFNCLP IAAIVDEKIF CCHGGLSPDL QSMEQIRRIM RPTDVPDQGL LCDLLWSDPD KDVLGWGEND RGVSFTFGAE VVAKFLHKHD LDLICRAHQV VEDGYEFFAK RQLVTLFSAP NYCGEFDNAG AMMSVDETLM CSFQILKPAE KKKPNATRPV TPPRGMITKQ AKK

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Macromolecule #4: I3

MacromoleculeName: I3 / type: protein_or_peptide / ID: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MSYYHHHHHH DYDIPTTENL YFQGAMGSMA EAGAGLSETV TETTVTVTTE PENRSLTIKL RKRKPEKKVE WTSDTVDNEH MGRRSSKCCC IYEKPRAFGE SSTESDEEEE EGCGHTHCVR GHRKGRRRAT LGPTPTTPPQ PPDPSQPPPG PMQH

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Macromolecule #5: p37

MacromoleculeName: p37 / type: protein_or_peptide / ID: 5 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString: GPLGSMAEGG RAEPEEQERG SSRPRPPSAR DLQLALAELY EDEMKCKSSK PDRSTPATCR SPRTPPHRLY SGDHKYDGLH IVQPPTGKIV NELFKEAREH GAVPLNEATR SSREDKTKSF TGGGYRLGNS FYKRSEYIYG ENQLQDVQVL LKLWRNGFSL DDGELRPYSD ...String:
GPLGSMAEGG RAEPEEQERG SSRPRPPSAR DLQLALAELY EDEMKCKSSK PDRSTPATCR SPRTPPHRLY SGDHKYDGLH IVQPPTGKIV NELFKEAREH GAVPLNEATR SSREDKTKSF TGGGYRLGNS FYKRSEYIYG ENQLQDVQVL LKLWRNGFSL DDGELRPYSD PTNAQFLESV KRGETPLELQ RLVHGAQVNL DMEDHQDQEY IKPRLRFKAF SGEGQKLGSL TPEIVSTPSS PEEEDKSILN AAVLIDDSMP TTKIQIRLAD GSRLVQRFNS THRILDVRDF IVRSRPEFAT TDFILVTSFP SKELTDETVT LQEADILNTV ILQQLK

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
Details: 50 mM HEPES pH 7.5, 150 mM KCl, 5 mM MgCl2, 2% glycerol, 1 mM DTT, 0.0005% NP40 and 2 mM ADP-BeFx
GridModel: C-flat-1.2/1.3 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.3000000000000003 µm / Nominal defocus min: 1.8 µm / Nominal magnification: 81000
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average exposure time: 3.0 sec. / Average electron dose: 48.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 6000000
Startup modelType of model: NONE
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: cryoSPARC
Final 3D classificationSoftware - Name: RELION
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.32 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 866937
FSC plot (resolution estimation)

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