2M32

Alpha-1 integrin I-domain in complex with GLOGEN triple helical peptide


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Structure of Integrin alpha 1I Domain in Complex with a Collagen-mimetic Peptide.

Chin, Y.K.Headey, S.J.Mohanty, B.Patil, R.McEwan, P.A.Swarbrick, J.D.Mulhern, T.D.Emsley, J.Simpson, J.S.Scanlon, M.J.

(2013) J.Biol.Chem. 288: 36796-36809

  • DOI: 10.1074/jbc.M113.480251

  • PubMed Abstract: 
  • We have determined the structure of the human integrin α1I domain bound to a triple-helical collagen peptide. The structure of the α1I-peptide complex was investigated using data from NMR, small angle x-ray scattering, and size exclusion chromatograp ...

    We have determined the structure of the human integrin α1I domain bound to a triple-helical collagen peptide. The structure of the α1I-peptide complex was investigated using data from NMR, small angle x-ray scattering, and size exclusion chromatography that were used to generate and validate a model of the complex using the data-driven docking program, HADDOCK (High Ambiguity Driven Biomolecular Docking). The structure revealed that the α1I domain undergoes a major conformational change upon binding of the collagen peptide. This involves a large movement in the C-terminal helix of the αI domain that has been suggested to be the mechanism by which signals are propagated in the intact integrin receptor. The structure suggests a basis for the different binding selectivity observed for the α1I and α2I domains. Mutational data identify residues that contribute to the conformational change observed. Furthermore, small angle x-ray scattering data suggest that at low collagen peptide concentrations the complex exists in equilibrium between a 1:1 and 2:1 α1I-peptide complex.


    Organizational Affiliation

    From Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Integrin alpha-1
A
192Homo sapiensMutation(s): 0 
Gene Names: ITGA1
Find proteins for P56199 (Homo sapiens)
Go to Gene View: ITGA1
Go to UniProtKB:  P56199
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GLOGEN peptide
B, C, D
23N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  3 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
B, C, D
NON-POLYMERH2 N

--

HYP
Query on HYP
B, C, D
L-PEPTIDE LINKINGC5 H9 N O3PRO
ACE
Query on ACE
B, C, D
NON-POLYMERC2 H4 O

--

Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-06
    Type: Initial release
  • Version 1.1: 2014-02-12
    Type: Database references