Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.01 kDa 
• Atom Count: 1069 
• Modelled Residue Count: 135 
• Deposited Residue Count: 145 
• Unique protein chains: 2

2JXC

Structure of the EPS15-EH2 Stonin2 Complex

• PDB DOI: 10.2210/pdb2JXC/pdb
• BMRB: 15554

• Classification: ENDOCYTOSIS/PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2007-11-12 Released: 2008-01-08 
• Deposition Author(s): Rumpf, J., Simon, B., Jung, N., Maritzen, T., Haucke, V., Sattler, M., Groemping, Y.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of the Eps15-stonin2 complex provides a molecular explanation for EH-domain ligand specificity.

Rumpf, J., Simon, B., Jung, N., Maritzen, T., Haucke, V., Sattler, M., Groemping, Y.

(2008) EMBO J 27: 558-569

• PubMed: 18200045 
• DOI: 10.1038/sj.emboj.7601980
• Primary Citation of Related Structures:  
  2JXC


• PubMed Abstract: 
  

Eps15 homology (EH) domain-containing proteins play a key regulatory role in intracellular membrane trafficking and cell signalling. EH domains serve as interaction platforms for short peptide motifs comprising the residues NPF within natively unstructured regions of accessory proteins. The EH-NPF interactions described thus far are of very low affinity and specificity. Here, we identify the presynaptic endocytic sorting adaptor stonin2 as a high-affinity ligand for the second EH domain (EH2) of the clathrin accessory protein Eps15. Calorimetric data indicate that both NPF motifs within stonin2 interact with EH2 simultaneously and with sub-micromolar affinity. The solution structure of this complex reveals that the first NPF motif binds to the conserved site on the EH domain, whereas the second motif inserts into a novel hydrophobic pocket. Our data show how combination of two EH-attachment sites provides a means for modulating specificity and allows discrimination from a large pool of potential binding partners containing NPF motifs.

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Related Citations: 

• 1H, 13C, and 15N Chemical Shift Assignments for the Eps15-Stonin2 complex
  Rumpf, J., Simon, B., Groemping, Y., Sattler, M.
  () To be published --: --

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Organizational Affiliation: 

Department of Biomolecular Mechanisms, Max-Planck-Institute for Medical Research, Heidelberg, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Epidermal growth factor receptor substrate 15	A	100	Homo sapiens	Mutation(s): 0  Gene Names: EPS15, AF1P
UniProt & NIH Common Fund Data Resources
Find proteins for P42566 (Homo sapiens) Explore P42566  Go to UniProtKB:  P42566
PHAROS:  P42566 GTEx:  ENSG00000085832

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Stonin-2	B	45	Homo sapiens	Mutation(s): 0  Gene Names: STON2, STN2, STNB
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WXE9 (Homo sapiens) Explore Q8WXE9  Go to UniProtKB:  Q8WXE9
PHAROS:  Q8WXE9 GTEx:  ENSG00000140022

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2JXC Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-11-12 
• Released Date: 2008-01-08 
Deposition Author(s): Rumpf, J., Simon, B., Jung, N., Maritzen, T., Haucke, V., Sattler, M., Groemping, Y.

Revision History  

• Version 1.0: 2008-01-08
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2013-06-19
  Changes: Database references