1IDN

MAC-1 I DOMAIN METAL FREE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Work: 0.174 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Cation binding to the integrin CD11b I domain and activation model assessment

Baldwin, E.T.Sarver, R.W.Bryant Jr., G.L.Curry, K.A.Fairbanks, M.B.Finzel, B.C.Garlick, R.L.Heinrikson, R.L.Horton, N.C.Kelley, L.L.Mildner, A.M.Moon, J.B.Mott, J.E.Mutchler, V.T.Tomich, C.S.Watenpaugh, K.D.Wiley, V.H.

(1998) Structure 6: 923-935

  • Primary Citation of Related Structures:  1BHO, 1BHQ

  • PubMed Abstract: 
  • The integrin family of cell-surface receptors mediate cell adhesion through interactions with the extracellular matrix or other cell-surface receptors. The alpha chain of some integrin heterodimers includes an inserted 'I domain' of about 200 amino a ...

    The integrin family of cell-surface receptors mediate cell adhesion through interactions with the extracellular matrix or other cell-surface receptors. The alpha chain of some integrin heterodimers includes an inserted 'I domain' of about 200 amino acids which binds divalent metal ions and is essential for integrin function. Lee et al. proposed that the I domain of the integrin CD11b adopts a unique 'active' conformation when bound to its counter receptor. In addition, they proposed that the lack of adhesion in the presence of Ca2+ ion reflected the stabilization of an 'inactive' I-domain conformation. We set out to independently determine the structure of the CD11 b I domain and to evaluate the structural effects of divalent ion binding to this protein.


    Organizational Affiliation

    Structural, Analytical & Medicinal Chemistry, Pharmacia & Upjohn, Inc., Kalamazoo, MI 49001, USA. eric.t.baldwin@am.pnu.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CD11B
1, 2
190Homo sapiensGene Names: ITGAM (CD11B, CR3A)
Find proteins for P11215 (Homo sapiens)
Go to Gene View: ITGAM
Go to UniProtKB:  P11215
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
1, 2
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Work: 0.174 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 49.320α = 90.00
b = 124.050β = 90.00
c = 76.380γ = 90.00
Software Package:
Software NamePurpose
XTALVIEWrefinement
PROLSQrefinement
XENGENdata reduction
XENGENdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1998-06-10 
  • Released Date: 1998-11-04 
  • Deposition Author(s): Baldwin, E.T.

Revision History 

  • Version 1.0: 1998-11-04
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance