Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 12.04 kDa 
• Atom Count: 826 
• Residue Count: 102 
• Unique protein chains: 1

2NO2

Crystal structure of the DLLRKN-containing coiled-coil domain of Huntingtin-interacting protein 1

• DOI: 10.2210/pdb2NO2/pdb

• Classification: CELL ADHESION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2006-10-24 Released: 2007-10-30 
• Deposition Author(s): Ybe, J.A., Mishra, S., Helms, S., Nix, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.313 
• R-Value Work: 0.286 
• R-Value Observed: 0.429 

Literature

Crystal structure at 2.8 A of the DLLRKN-containing coiled-coil domain of huntingtin-interacting protein 1 (HIP1) reveals a surface suitable for clathrin light chain binding

Ybe, J.A., Mishra, S., Helms, S., Nix, J.

(2007) J Mol Biol 367: 8-15

• PubMed: 17257618 
• DOI: 10.1016/j.jmb.2006.12.052
• Primary Citation of Related Structures:  
  2NO2


• PubMed Abstract: 
  

Huntingtin interacting protein 1 (HIP1) is a member of a family of proteins whose interaction with Huntingtin is critical to prevent cells from initiating apoptosis. HIP1, and related protein HIP12/1R, can also bind to clathrin and membrane phospholipids, and HIP12/1R links the CCV to the actin cytoskeleton. HIP1 and HIP12/1R interact with the clathrin light chain EED regulatory site and stimulate clathrin lattice assembly. Here, we report the X-ray structure of the coiled-coil domain of HIP1 (residues 482-586) that includes residues crucial for binding clathrin light chain. The dimeric HIP1 crystal structure is partially splayed open. The comparison of the HIP1 model with coiled-coil predictions revealed the heptad repeat in the dimeric trunk (S2 path) is offset relative to the register of the heptad repeat from the N-terminal portion (S1 path) of the molecule. Furthermore, surface analysis showed there is a third hydrophobic path (S3) running parallel with S1 and S2. We present structural evidence supporting a role for the S3 path as an interaction surface for clathrin light chain. Finally, comparative analysis suggests the mode of binding between sla2p and clathrin light chain may be different in yeast.

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Organizational Affiliation: 

Department of Biology, Indiana University, Bloomington, IN 47405, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Huntingtin-interacting protein 1	A	107	Homo sapiens	Mutation(s): 0  Gene Names: HIP1
Find proteins for O00291 (Homo sapiens) Explore O00291  Go to UniProtKB:  O00291
NIH Common Fund Data Resources
PHAROS  O00291 GTEx  ENSG00000127946

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.313 
• R-Value Work: 0.286 
• R-Value Observed: 0.429 
• Space Group: P 4₂ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.2	α = 90
b = 54.2	β = 90
c = 152.2	γ = 90

Software Package:

Software Name	Purpose
d*TREK	data scaling
SOLVE	phasing
RESOLVE	phasing
CNS	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
d*TREK	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-10-24 
• Released Date: 2007-10-30 
Deposition Author(s): Ybe, J.A., Mishra, S., Helms, S., Nix, J.

Revision History 

• Version 1.0: 2007-10-30
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance