Biological Assembly 1  

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

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17.81 kDa 
• Atom Count: 1289 
• Modelled Residue Count: 149 
• Deposited Residue Count: 149 
• Unique protein chains: 1

1EDU

CRYSTAL STRUCTURE OF THE ENTH DOMAIN OF RAT EPSIN 1

• PDB DOI: 10.2210/pdb1EDU/pdb

• Classification: ENDOCYTOSIS/EXOCYTOSIS
• Organism(s): Rattus norvegicus
• Expression System: Bacteria
• Mutation(s): Yes 


• Deposited: 2000-01-28 Released: 2000-05-10 
• Deposition Author(s): Hyman, J.H., Chen, H., Decamilli, P., Brunger, A.T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.224 
• R-Value Work: 0.206 

Literature

Epsin 1 undergoes nucleocytosolic shuttling and its eps15 interactor NH(2)-terminal homology (ENTH) domain, structurally similar to Armadillo and HEAT repeats, interacts with the transcription factor promyelocytic leukemia Zn(2)+ finger protein (PLZF).

Hyman, J., Chen, H., Di Fiore, P.P., De Camilli, P., Brunger, A.T.

(2000) J Cell Biol 149: 537-546

• PubMed: 10791968 
• DOI: 10.1083/jcb.149.3.537
• Primary Citation of Related Structures:  
  1EDU


• PubMed Abstract: 
  

Epsin (Eps15 interactor) is a cytosolic protein involved in clathrin-mediated endocytosis via its direct interactions with clathrin, the clathrin adaptor AP-2, and Eps15. The NH(2)-terminal portion of epsin contains a phylogenetically conserved module of unknown function, known as the ENTH domain (epsin NH(2)-terminal homology domain). We have now solved the crystal structure of rat epsin 1 ENTH domain to 1.8 A resolution. This domain is structurally similar to armadillo and Heat repeats of beta-catenin and karyopherin-beta, respectively. We have also identified and characterized the interaction of epsin 1, via the ENTH domain, with the transcription factor promyelocytic leukemia Zn(2)+ finger protein (PLZF). Leptomycin B, an antifungal antibiotic, which inhibits the Crm1- dependent nuclear export pathway, induces an accumulation of epsin 1 in the nucleus. These findings suggest that epsin 1 may function in a signaling pathway connecting the endocytic machinery to the regulation of nuclear function.

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Organizational Affiliation: 

Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
EH domain binding protein EPSIN	A	149	Rattus norvegicus	Mutation(s): 6  Gene Names: Epn1
UniProt
Find proteins for O88339 (Rattus norvegicus) Explore O88339  Go to UniProtKB:  O88339

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	B [auth A], C [auth A], D [auth A], E [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.224 
• R-Value Work: 0.206 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.807	α = 90
b = 49.807	β = 90
c = 99.967	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-01-28 
• Released Date: 2000-05-10 
Deposition Author(s): Hyman, J.H., Chen, H., Decamilli, P., Brunger, A.T.

Revision History  

• Version 1.0: 2000-05-10
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-01-31
  Changes: Experimental preparation