1OO9

Orientation in Solution of MMP-3 Catalytic Domain and N-TIMP-1 from Residual Dipolar Couplings


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 25 
  • Conformers Submitted: 
  • Selection Criteria: lowest energy structure 

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This is version 1.3 of the entry. See complete history


Literature

Global Orientation of Bound MMP-3 and N-TIMP-1 in Solution via Residual Dipolar Couplings

Arumugam, S.Van Doren, S.R.

(2003) Biochemistry 42: 7950-7958

  • DOI: https://doi.org/10.1021/bi034545s
  • Primary Citation of Related Structures:  
    1OO9

  • PubMed Abstract: 

    Crystal structures of catalytic domains of MMP-3 and MT1-MMP bound to TIMP-1 or TIMP-2, respectively, differ in the orientation of the TIMP in the MMP active site. The orientation in solution of N-TIMP-1 in the MMP-3 active site has been investigated using residual dipolar couplings (RDCs). Fitting of the RDCs to the X-ray structures of the complexes suggests general agreement with the orientation of crystalline MMP-3(DeltaC) and TIMP-1 and a large disparity from the orientation of crystalline MT1-MMP(DeltaC) and TIMP-2. Rigid body docking of MMP-3 and N-TIMP-1 X-ray coordinates using RDCs and intermolecular NOEs provided a time-averaged orientation in solution differing from the crystal structure by a 5 degrees rotation toward the MT1-MMP(DeltaC)/TIMP-2 orientation. The slight discrepancy in orientations in solution and crystal lies within the experimental uncertainties. Intermolecular NOEs used in the docking corroborated the accuracy of mapping the interface by a paramagnetic NMR footprinting assay, a potential alternative source of contacts for docking. Some uncertainty in the N-TIMP-1 orientation in the MMP-3 active site, coupled with microsecond to millisecond fluctuations of the MMP-binding ridge of N-TIMP-1 in the complex and flexibility in MMP-3(DeltaC) S(1)' to S(3)' subsites, leaves open the possibility that N-TIMP-1 might dynamically pivot a few degrees or more in the arc toward the MT1-MMP(DeltaC)/TIMP-2 orientation. Differing TIMP orientations in MMP active sites are more likely to result from structural differences in TIMP AB hairpin loops than from crystal packing artifacts.


  • Organizational Affiliation

    Department of Biochemistry, 117 Schweitzer Hall, University of Missouri, Columbia, Missouri 65211, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Stromelysin-1168Homo sapiensMutation(s): 0 
Gene Names: MMP3 OR STMY1
EC: 3.4.24.17
UniProt & NIH Common Fund Data Resources
Find proteins for P08254 (Homo sapiens)
Explore P08254 
Go to UniProtKB:  P08254
PHAROS:  P08254
GTEx:  ENSG00000149968 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08254
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Metalloproteinase inhibitor 1126Homo sapiensMutation(s): 0 
Gene Names: TIMP1 OR TIMP OR CLGI
UniProt & NIH Common Fund Data Resources
Find proteins for P01033 (Homo sapiens)
Explore P01033 
Go to UniProtKB:  P01033
PHAROS:  P01033
GTEx:  ENSG00000102265 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01033
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 25 
  • Conformers Submitted: 
  • Selection Criteria: lowest energy structure 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-07-29
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Data collection, Database references, Derived calculations