4JIF

Co-crystal structure of ICAP1 PTB domain in complex with a KRIT1 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Cocrystal structure of the ICAP1 PTB domain in complex with a KRIT1 peptide.

Liu, W.Boggon, T.J.

(2013) Acta Crystallogr Sect F Struct Biol Cryst Commun 69: 494-498

  • DOI: 10.1107/S1744309113010762
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Integrin cytoplasmic domain-associated protein-1 (ICAP1) is a suppressor of integrin activation and directly binds to the cytoplasmic tail of β1 integrins; its binding suppresses integrin activation by competition with talin. Krev/Rap1 interaction tr ...

    Integrin cytoplasmic domain-associated protein-1 (ICAP1) is a suppressor of integrin activation and directly binds to the cytoplasmic tail of β1 integrins; its binding suppresses integrin activation by competition with talin. Krev/Rap1 interaction trapped-1 (KRIT1) releases ICAP1 suppression of integrin activation by sequestering ICAP1 away from integrin cytoplasmic tails. Here, the cocrystal structure of the PTB domain of ICAP1 in complex with a 29-amino-acid fragment (residues 170-198) of KRIT1 is presented to 1.7 Å resolution [the resolution at which 〈I/σ(I)〉 = 2.9 was 1.83 Å]. In previous studies, the structure of ICAP1 with integrin β1 was determined to 3.0 Å resolution and that of ICAP1 with the N-terminal portion of KRIT1 (residues 1-198) was determined to 2.54 Å resolution; therefore, this study provides the highest resolution structure yet of ICAP1 and allows further detailed analysis of the interaction of ICAP1 with its minimal binding region in KRIT1.


    Organizational Affiliation

    Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA. liuweizhi@ouc.edu.cn



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Integrin beta-1-binding protein 1
A
154Homo sapiensMutation(s): 0 
Gene Names: ITGB1BP1ICAP1
Find proteins for O14713 (Homo sapiens)
Go to UniProtKB:  O14713
NIH Common Fund Data Resources
PHAROS  O14713
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Krev interaction trapped protein 1
B
34Homo sapiensMutation(s): 0 
Gene Names: KRIT1CCM1
Find proteins for O00522 (Homo sapiens)
Go to UniProtKB:  O00522
NIH Common Fund Data Resources
PHAROS  O00522
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.197 
  • Space Group: P 65 2 2
  • Diffraction Data DOI: 10.15785/SBGRID/548 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.017α = 90
b = 81.017β = 90
c = 89.583γ = 120
Software Package:
Software NamePurpose
CBASSdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-03-05 
  • Released Date: 2013-05-01 
  • Deposition Author(s): Liu, W., Boggon, T.J.

Revision History 

  • Version 1.0: 2013-05-01
    Type: Initial release
  • Version 1.1: 2013-07-10
    Changes: Database references