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- PDB-7soy: The structure of the PP2A-B56gamma1 holoenzyme-PME-1 complex -

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Entry
Database: PDB / ID: 7soy
TitleThe structure of the PP2A-B56gamma1 holoenzyme-PME-1 complex
Components
  • Isoform Gamma-1 of Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform
  • Protein phosphatase methylesterase 1
  • Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform
  • Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform
KeywordsRECOMBINATION / The structure of PP2A-B56gamma holoenzyme-PME-1 complex
Function / homology
Function and homology information


protein phosphatase methylesterase-1 / protein C-terminal methylesterase activity / protein methylesterase activity / meiotic spindle elongation / Integration of energy metabolism / PP2A-mediated dephosphorylation of key metabolic factors / regulation of microtubule binding / MASTL Facilitates Mitotic Progression / mitotic sister chromatid separation / regulation of meiotic cell cycle process involved in oocyte maturation ...protein phosphatase methylesterase-1 / protein C-terminal methylesterase activity / protein methylesterase activity / meiotic spindle elongation / Integration of energy metabolism / PP2A-mediated dephosphorylation of key metabolic factors / regulation of microtubule binding / MASTL Facilitates Mitotic Progression / mitotic sister chromatid separation / regulation of meiotic cell cycle process involved in oocyte maturation / protein phosphatase type 2A complex / meiotic sister chromatid cohesion, centromeric / peptidyl-serine dephosphorylation / peptidyl-threonine dephosphorylation / protein demethylation / positive regulation of microtubule binding / Regulation of glycolysis by fructose 2,6-bisphosphate metabolism / Inhibition of replication initiation of damaged DNA by RB1/E2F1 / female meiotic nuclear division / protein antigen binding / protein phosphatase regulator activity / GABA receptor binding / APC truncation mutants have impaired AXIN binding / AXIN missense mutants destabilize the destruction complex / Truncations of AMER1 destabilize the destruction complex / Initiation of Nuclear Envelope (NE) Reformation / ERKs are inactivated / positive regulation of extrinsic apoptotic signaling pathway in absence of ligand / Beta-catenin phosphorylation cascade / Signaling by GSK3beta mutants / CTNNB1 S33 mutants aren't phosphorylated / CTNNB1 S37 mutants aren't phosphorylated / CTNNB1 S45 mutants aren't phosphorylated / CTNNB1 T41 mutants aren't phosphorylated / negative regulation of epithelial to mesenchymal transition / lncRNA binding / regulation of growth / Disassembly of the destruction complex and recruitment of AXIN to the membrane / protein phosphatase inhibitor activity / negative regulation of glycolytic process through fructose-6-phosphate / positive regulation of NLRP3 inflammasome complex assembly / myosin phosphatase activity / CTLA4 inhibitory signaling / protein serine/threonine phosphatase activity / Platelet sensitization by LDL / protein-serine/threonine phosphatase / regulation of cell differentiation / ERK/MAPK targets / T cell homeostasis / protein phosphatase activator activity / regulation of G1/S transition of mitotic cell cycle / mesoderm development / phosphoprotein phosphatase activity / chromosome, centromeric region / DARPP-32 events / lateral plasma membrane / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Cyclin A/B1/B2 associated events during G2/M transition / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / Resolution of Sister Chromatid Cohesion / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest / AURKA Activation by TPX2 / protein dephosphorylation / meiotic cell cycle / protein phosphatase 2A binding / protein tyrosine phosphatase activity / chromosome segregation / RHO GTPases Activate Formins / response to lead ion / Spry regulation of FGF signaling / RAF activation / regulation of protein phosphorylation / Degradation of beta-catenin by the destruction complex / PKR-mediated signaling / tau protein binding / positive regulation of protein serine/threonine kinase activity / spindle pole / Negative regulation of MAPK pathway / Separation of Sister Chromatids / G2/M transition of mitotic cell cycle / Cyclin D associated events in G1 / microtubule cytoskeleton / Regulation of PLK1 Activity at G2/M Transition / Regulation of TP53 Degradation / mitotic cell cycle / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protein-containing complex assembly / protein phosphatase binding / proteasome-mediated ubiquitin-dependent protein catabolic process / intracellular signal transduction / cadherin binding
Similarity search - Function
Protein phosphatase methylesterase, eukaryotic / Protein phosphatase 2A, regulatory B subunit, B56 / Protein phosphatase 2A regulatory B subunit (B56 family) / : / HEAT repeat / HEAT repeat / Lipases, serine active site. / Serine/threonine specific protein phosphatases signature. / Protein phosphatase 2A homologues, catalytic domain. / Serine/threonine-specific protein phosphatase/bis(5-nucleosyl)-tetraphosphatase ...Protein phosphatase methylesterase, eukaryotic / Protein phosphatase 2A, regulatory B subunit, B56 / Protein phosphatase 2A regulatory B subunit (B56 family) / : / HEAT repeat / HEAT repeat / Lipases, serine active site. / Serine/threonine specific protein phosphatases signature. / Protein phosphatase 2A homologues, catalytic domain. / Serine/threonine-specific protein phosphatase/bis(5-nucleosyl)-tetraphosphatase / HEAT repeat profile. / HEAT, type 2 / Alpha/beta hydrolase family / HEAT repeats / Calcineurin-like phosphoesterase domain, ApaH type / Calcineurin-like phosphoesterase / Metallo-dependent phosphatase-like / Alpha/beta hydrolase fold-1 / Armadillo-like helical / Alpha/Beta hydrolase fold / Armadillo-type fold
Similarity search - Domain/homology
Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform / Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform / Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform / Protein phosphatase methylesterase 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsLi, Y. / Balakrishnan, V.K. / Rowse, M. / Novikova, I.V. / Xing, Y.
Funding support3items
OrganizationGrant numberCountry
American Cancer SocietyRSG-10-153-01-DMC
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01 GM096060-01
Other privateA19-3376-5007
Citation
Journal: Elife / Year: 2022
Title: Coupling to short linear motifs creates versatile PME-1 activities in PP2A holoenzyme demethylation and inhibition.
Authors: Yitong Li / Vijaya Kumar Balakrishnan / Michael Rowse / Cheng-Guo Wu / Anastasia Phoebe Bravos / Vikash K Yadav / Ylva Ivarsson / Stefan Strack / Irina V Novikova / Yongna Xing /
Abstract: Protein phosphatase 2A (PP2A) holoenzymes target broad substrates by recognizing short motifs via regulatory subunits. PP2A methylesterase 1 (PME-1) is a cancer-promoting enzyme and undergoes ...Protein phosphatase 2A (PP2A) holoenzymes target broad substrates by recognizing short motifs via regulatory subunits. PP2A methylesterase 1 (PME-1) is a cancer-promoting enzyme and undergoes methylesterase activation upon binding to the PP2A core enzyme. Here, we showed that PME-1 readily demethylates different families of PP2A holoenzymes and blocks substrate recognition in vitro. The high-resolution cryoelectron microscopy structure of a PP2A-B56 holoenzyme-PME-1 complex reveals that PME-1 disordered regions, including a substrate-mimicking motif, tether to the B56 regulatory subunit at remote sites. They occupy the holoenzyme substrate-binding groove and allow large structural shifts in both holoenzyme and PME-1 to enable multipartite contacts at structured cores to activate the methylesterase. B56 interface mutations selectively block PME-1 activity toward PP2A-B56 holoenzymes and affect the methylation of a fraction of total cellular PP2A. The B56 interface mutations allow us to uncover B56-specific PME-1 functions in p53 signaling. Our studies reveal multiple mechanisms of PME-1 in suppressing holoenzyme functions and versatile PME-1 activities derived from coupling substrate-mimicking motifs to dynamic structured cores.
#1: Journal: Acta Crystallogr., Sect. D: Biol. Crystallogr. / Year: 2018
Title: Real-space refinement in PHENIX for cryo-EM and crystallography
Authors: Xing, Y.
History
DepositionNov 1, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 31, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 5, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform
B: Isoform Gamma-1 of Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform
C: Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform
P: Protein phosphatase methylesterase 1


Theoretical massNumber of molelcules
Total (without water)196,0624
Polymers196,0624
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform / Medium tumor antigen-associated 61 kDa protein / PP2A subunit A isoform PR65-alpha / PP2A subunit A ...Medium tumor antigen-associated 61 kDa protein / PP2A subunit A isoform PR65-alpha / PP2A subunit A isoform R1-alpha


Mass: 65378.344 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PPP2R1A / Production host: Escherichia coli (E. coli) / References: UniProt: P30153
#2: Protein Isoform Gamma-1 of Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform / PP2A B subunit isoform B'-gamma / PP2A B subunit isoform B56-gamma / PP2A B subunit isoform PR61- ...PP2A B subunit isoform B'-gamma / PP2A B subunit isoform B56-gamma / PP2A B subunit isoform PR61-gamma / PP2A B subunit isoform R5-gamma / Renal carcinoma antigen NY-REN-29


Mass: 52695.270 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PPP2R5C, KIAA0044 / Production host: Escherichia coli (E. coli) / References: UniProt: Q13362
#3: Protein Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform / PP2A-alpha / Replication protein C / RP-C


Mass: 35636.152 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PPP2CA / Production host: Trichoplusia ni (cabbage looper)
References: UniProt: P67775, protein-serine/threonine phosphatase
#4: Protein Protein phosphatase methylesterase 1 / PME-1


Mass: 42352.379 Da / Num. of mol.: 1 / Mutation: S156A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PPME1, PME1, PP2593, PRO0750 / Production host: Escherichia coli (E. coli)
References: UniProt: Q9Y570, protein phosphatase methylesterase-1

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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: The structure of PP2A-B56gamma holoenzyme-PME-1 complex
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 8
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE

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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: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2300 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50.8 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
EM softwareName: cryoSPARC / Category: CTF correction
CTF correctionType: NONE
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 276737 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 243.24 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00312444
ELECTRON MICROSCOPYf_angle_d0.6316875
ELECTRON MICROSCOPYf_dihedral_angle_d12.6314633
ELECTRON MICROSCOPYf_chiral_restr0.0431916
ELECTRON MICROSCOPYf_plane_restr0.0042163

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