8UO5 | pdb_00008uo5

Protein Phosphatase 2A B55 subunit in complex with IER5

• PDB DOI: https://doi.org/10.2210/pdb8UO5/pdb
• EM Map EMD-42428: EMDB EMDataResource

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2023-10-19 Released: 2025-03-26 
• Deposition Author(s): Jones, D.T.D., Cao, R., Rawson, S.D., Blacklow, S.C.
• Funding Organization(s): National Institutes of Health/National Cancer Institute (NIH/NCI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.27 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Protein Phosphatase 2A B55 subunit in complex with IER5

Jones, D.T.D., Cao, R., Rawson, S.D., Blacklow, S.C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 166.74 kDa 
• Atom Count: 10,216 
• Modeled Residue Count: 1,303 
• Deposited Residue Count: 1,466 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform	A	613	Homo sapiens	Mutation(s): 0  Gene Names: PPP2R1A
UniProt & NIH Common Fund Data Resources
Find proteins for P30153 (Homo sapiens) Explore P30153  Go to UniProtKB:  P30153
PHAROS:  P30153 GTEx:  ENSG00000105568

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform	B	447	Homo sapiens	Mutation(s): 0  Gene Names: PPP2R2A
UniProt & NIH Common Fund Data Resources
Find proteins for P63151 (Homo sapiens) Explore P63151  Go to UniProtKB:  P63151
PHAROS:  P63151 GTEx:  ENSG00000221914

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform	C	332	Homo sapiens	Mutation(s): 0  Gene Names: PPP2CA EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for P67775 (Homo sapiens) Explore P67775  Go to UniProtKB:  P67775
PHAROS:  P67775 GTEx:  ENSG00000113575

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Immediate early response gene 5 protein	D	74	Homo sapiens	Mutation(s): 0  Gene Names: IER5, PP4583, SBBI48
UniProt & NIH Common Fund Data Resources
Find proteins for Q5VY09 (Homo sapiens) Explore Q5VY09  Go to UniProtKB:  Q5VY09
PHAROS:  Q5VY09 GTEx:  ENSG00000162783

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN (Subject of Investigation/LOI)	F [auth C]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
FE (Subject of Investigation/LOI)	E [auth C]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.27 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-26 
Deposition Author(s): Jones, D.T.D., Cao, R., Rawson, S.D., Blacklow, S.C.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	CA220340

Revision History  

• Version 1.0: 2025-03-26
  Type: Initial release