1FBL

STRUCTURE OF FULL-LENGTH PORCINE SYNOVIAL COLLAGENASE (MMP1) REVEALS A C-TERMINAL DOMAIN CONTAINING A CALCIUM-LINKED, FOUR-BLADED BETA-PROPELLER


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.217 
  • R-Value Observed: 0.217 

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This is version 1.3 of the entry. See complete history


Literature

Structure of full-length porcine synovial collagenase reveals a C-terminal domain containing a calcium-linked, four-bladed beta-propeller.

Li, J.Brick, P.O'Hare, M.C.Skarzynski, T.Lloyd, L.F.Curry, V.A.Clark, I.M.Bigg, H.F.Hazleman, B.L.Cawston, T.E.Blow, D.M.

(1995) Structure 3: 541-549

  • DOI: https://doi.org/10.1016/s0969-2126(01)00188-5
  • Primary Citation of Related Structures:  
    1FBL

  • PubMed Abstract: 

    The collagenases are members of the family of zinc-dependent enzymes known as the matrix metalloproteinases (MMPs). They are the only proteinases that specifically cleave the collagen triple helix, and are important in a large number of physiological and pathological processes. Structures are known for the N-terminal catalytic' domain of collagenases MMP-1 and MMP-8 and of stromelysin (MMP-3). This catalytic domain alone, which comprises about 150 amino acids, has no activity against collagen. A second domain, of 200 amino acids, is homologous to haemopexin, a haem-binding glycoprotein. The crystal structure of full-length MMP-1 at 2.5 A resolution gives an R-factor of 21.7%. Two domains are connected by an exposed proline-rich linker of 17 amino acids, which is probably flexible and has no secondary structure. The catalytic domain resembles those previously observed, and contains three calcium-binding sites. The haemopexin-like domain contains four units of four-stranded antiparallel beta sheet stabilized on its fourfold axis by a cation, which is probably calcium. The domain constitutes a four-bladed beta-propeller structure in which the blades are scarcely twisted. The exposed linker accounts for the difficulty in purifying full-length collagenase. The C-terminal domain provides a structural model for haemopexin and its homologues. It controls the specificity of MMPs, affecting both substrate and inhibitor binding, although its role remains obscure. These structural results should aid the design of site-specific mutants which will reveal further details of the specificity mechanism.


  • Organizational Affiliation

    Blackert Laboratory, Imperial College, London, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FIBROBLAST (INTERSTITIAL) COLLAGENASE (MMP-1)370Sus scrofaMutation(s): 0 
EC: 3.4.24.7
UniProt
Find proteins for P21692 (Sus scrofa)
Explore P21692 
Go to UniProtKB:  P21692
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21692
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
HTA BindingDB:  1FBL Ki: min: 1, max: 10 (nM) from 3 assay(s)
IC50: min: 1.9, max: 20 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.217 
  • R-Value Observed: 0.217 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 161.14α = 90
b = 161.14β = 90
c = 52.22γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-01-29
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2012-02-22
    Changes: Database references