2LLP

Solution structure of a THP type 1 alpha 1 collagen fragment (772-786)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 900 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural basis for matrix metalloproteinase 1-catalyzed collagenolysis.

Bertini, I.Fragai, M.Luchinat, C.Melikian, M.Toccafondi, M.Lauer, J.L.Fields, G.B.

(2012) J.Am.Chem.Soc. 134: 2100-2110

  • DOI: 10.1021/ja208338j

  • PubMed Abstract: 
  • The proteolysis of collagen triple-helical structure (collagenolysis) is a poorly understood yet critical physiological process. Presently, matrix metalloproteinase 1 (MMP-1) and collagen triple-helical peptide models have been utilized to characteri ...

    The proteolysis of collagen triple-helical structure (collagenolysis) is a poorly understood yet critical physiological process. Presently, matrix metalloproteinase 1 (MMP-1) and collagen triple-helical peptide models have been utilized to characterize the events and calculate the energetics of collagenolysis via NMR spectroscopic analysis of 12 enzyme-substrate complexes. The triple-helix is bound initially by the MMP-1 hemopexin-like (HPX) domain via a four amino acid stretch (analogous to type I collagen residues 782-785). The triple-helix is then presented to the MMP-1 catalytic (CAT) domain in a distinct orientation. The HPX and CAT domains are rotated with respect to one another compared with the X-ray "closed" conformation of MMP-1. Back-rotation of the CAT and HPX domains to the X-ray closed conformation releases one chain out of the triple-helix, and this chain is properly positioned in the CAT domain active site for subsequent hydrolysis. The aforementioned steps provide a detailed, experimentally derived, and energetically favorable collagenolytic mechanism, as well as significant insight into the roles of distinct domains in extracellular protease function.


    Organizational Affiliation

    Magnetic Resonance Center (CERM), University of Florence, Via L. Sacconi 6, 50019 Sesto Fiorentino, Italy. bertini@cerm.unifi.it




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Collagen alpha-1(I) chain
A, B, C
18Homo sapiensGene Names: COL1A1
Find proteins for P02452 (Homo sapiens)
Go to Gene View: COL1A1
Go to UniProtKB:  P02452
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 900 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 2LLP Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-30
    Type: Initial release