1INZ | pdb_00001inz

SOLUTION STRUCTURE OF THE EPSIN N-TERMINAL HOMOLOGY (ENTH) DOMAIN OF HUMAN EPSIN

• PDB DOI: https://doi.org/10.2210/pdb1INZ/pdb
• BMRB: 4959

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


• Deposited: 2000-12-05 Released: 2001-05-09 
• Deposition Author(s): Koshiba, S., Kigawa, T., Kikuchi, A., Yokoyama, S., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 20 
• Selection Criteria: lowest energy 

Literature

Solution structure of the epsin N-terminal homology (ENTH) domain of human epsin

Koshiba, S., Kigawa, T., Kikuchi, A., Yokoyama, S.

(2001) J Struct Funct Genomics 2: 1-8

• PubMed: 12836669 
• DOI: https://doi.org/10.1023/a:1011397007366
• Primary Citation Related Structures: 
  1INZ


• PubMed Abstract: 
  

  Epsin is a protein that binds to the Eps15 homology (EH) domains, and is involved in clathrin-mediated endocytosis. The epsin N-terminal homology (ENTH) domain (about 140 amino acid residues) is well conserved in eukaryotes and is considered to be important for actin cytoskeleton organization in endocytosis. In this study, we have determined the solution structure of the ENTH domain (residues 1-144) of human epsin by multidimensional nuclear magnetic resonance spectroscopy. In the ENTH-domain structure, seven alpha-helices form a superhelical fold, consisting of two antiparallel two-helix HEAT motifs and one three-helix ARM motif, with a continuous hydrophobic core in the center. We conclude that the seven-helix superhelical fold defines the ENTH domain, and that the previously-reported eight-helix fold of a longer fragment of rat epsin 1 is divided into the authentic ENTH domain and a C-terminal flanking alpha-helix.

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Organizational Affiliation: 
• Genomic Sciences Center, RIKEN Yokohama Institute, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 17.31 kDa 
• Atom Count: 1,209 
• Modeled Residue Count: 148 
• Deposited Residue Count: 148 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
EPS15-INTERACTING PROTEIN(EPSIN)	A	148	Homo sapiens	Mutation(s): 0  Gene Names: EPSIN
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6I3 (Homo sapiens) Explore Q9Y6I3  Go to UniProtKB:  Q9Y6I3
PHAROS:  Q9Y6I3 GTEx:  ENSG00000063245

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 20 
• Selection Criteria: lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-05-09 
Deposition Author(s): Koshiba, S., Kigawa, T., Kikuchi, A., Yokoyama, S., RIKEN Structural Genomics/Proteomics Initiative (RSGI)

Revision History  

• Version 1.0: 2001-05-09
  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: 2020-09-09
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.4: 2023-12-27
  Changes: Data collection, Database references