3I00 | pdb_00003i00

Crystal Structure of the huntingtin interacting protein 1 coiled coil domain

• PDB DOI: https://doi.org/10.2210/pdb3I00/pdb

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


• Deposited: 2009-06-24 Released: 2010-02-23 
• Deposition Author(s): Wilbur, J.D., Hwang, P.K., Brodsky, F.M., Fletterick, R.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.280 (Depositor), 0.331 (DCC) 
• R-Value Work: 
  0.235 (Depositor), 0.321 (DCC) 
• R-Value Observed: 
  0.237 (Depositor) 

Literature

Accommodation of structural rearrangements in the huntingtin-interacting protein 1 coiled-coil domain.

Wilbur, J.D., Hwang, P.K., Brodsky, F.M., Fletterick, R.J.

(2010) Acta Crystallogr D Biol Crystallogr 66: 314-318

• PubMed: 20179344 
• DOI: https://doi.org/10.1107/S0907444909054535
• Primary Citation Related Structures: 
  3I00


• PubMed Abstract: 
  

  Huntingtin-interacting protein 1 (HIP1) is an important link between the actin cytoskeleton and clathrin-mediated endocytosis machinery. HIP1 has also been implicated in the pathogenesis of Huntington's disease. The binding of HIP1 to actin is regulated through an interaction with clathrin light chain. Clathrin light chain binds to a flexible coiled-coil domain in HIP1 and induces a compact state that is refractory to actin binding. To understand the mechanism of this conformational regulation, a high-resolution crystal structure of a stable fragment from the HIP1 coiled-coil domain was determined. The flexibility of the HIP1 coiled-coil region was evident from its variation from a previously determined structure of a similar region. A hydrogen-bond network and changes in coiled-coil monomer interaction suggest that the HIP1 coiled-coil domain is uniquely suited to allow conformational flexibility.

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Organizational Affiliation: 
• Graduate Program in Biophysics, University of California, San Francisco, California 94143, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content 

• Total Structure Weight: 28.39 kDa 
• Atom Count: 1,346 
• Modeled Residue Count: 156 
• Deposited Residue Count: 240 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Huntingtin-interacting protein 1	A, B	120	Homo sapiens	Mutation(s): 0  Gene Names: HIP1, huntingtin interactin protein 1 (HIP1)
UniProt & NIH Common Fund Data Resources
Find proteins for O00291 (Homo sapiens) Explore O00291  Go to UniProtKB:  O00291
PHAROS:  O00291 GTEx:  ENSG00000127946

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free:  0.280 (Depositor), 0.331 (DCC) 
• R-Value Work:  0.235 (Depositor), 0.321 (DCC) 
• R-Value Observed: 0.237 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 35.801	α = 90
b = 57.092	β = 90
c = 81.161	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-02-23 
Deposition Author(s): Wilbur, J.D., Hwang, P.K., Brodsky, F.M., Fletterick, R.J.

Revision History  

• Version 1.0: 2010-02-23
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2012-03-21
  Changes: Database references
• Version 1.3: 2017-11-01
  Changes: Refinement description
• Version 1.4: 2024-11-06
  Changes: Data collection, Database references, Structure summary