4MH0

Selective activation of Epac1 and Epac2

• PDB DOI: https://doi.org/10.2210/pdb4MH0/pdb

• Classification: SIGNALING PROTEIN/GTP-BINDING PROTEIN
• Organism(s): Mus musculus, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-08-29 Released: 2014-09-03 
• Deposition Author(s): Rehmann, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.282 
• R-Value Work: 0.266 
• R-Value Observed: 0.266 

Starting Model: experimental

Literature

Selective activation of Epac1 and Epac2

Rehmann, H.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 99.37 kDa 
• Atom Count: 6,534 
• Modelled Residue Count: 777 
• Deposited Residue Count: 861 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Rap guanine nucleotide exchange factor 4	A [auth E]	694	Mus musculus	Mutation(s): 0  Gene Names: Rapgef4, Cgef2, Epac2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9EQZ6 (Mus musculus) Explore Q9EQZ6  Go to UniProtKB:  Q9EQZ6
IMPC:  MGI:1917723

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Ras-related protein Rap-1b	B [auth R]	167	Homo sapiens	Mutation(s): 0  Gene Names: RAP1B, OK/SW-cl.11 EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P61224 (Homo sapiens) Explore P61224  Go to UniProtKB:  P61224
PHAROS:  P61224 GTEx:  ENSG00000127314

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HR4	C [auth E], D [auth E]	(2S,4aR,6R,7R,7aS)-6-{6-amino-8-[(4-fluorobenzyl)sulfanyl]-9H-purin-9-yl}-2-sulfanyltetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-7-ol 2-oxide C17 H17 F N5 O5 P S2 HQPHMVRGPVFPCD-BVGSDMBWSA-N
SO4	E [auth R]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.282 
• R-Value Work: 0.266 
• R-Value Observed: 0.266 
• Space Group: I 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 125.758	α = 90
b = 148.744	β = 90
c = 225.165	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-09-03 
Deposition Author(s): Rehmann, H.

Revision History  

• Version 1.0: 2014-09-03
  Type: Initial release
  
• Version 1.1: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description