Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4.97 kDa 
• Atom Count: 313 
• Modelled Residue Count: 48 
• Deposited Residue Count: 54 
• Unique protein chains: 1

2LLP

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

• PDB DOI: 10.2210/pdb2LLP/pdb
• BMRB: 18083

• Classification: STRUCTURAL PROTEIN, CONTRACTILE PROTEIN
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2011-11-15 Released: 2012-05-30 
• Deposition Author(s): Bertini, I., Fragai, M., Luchinat, C., Melikian, M., Toccafondi, M., Lauer, J.L., Fields, G.B.

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Experimental Data Snapshot

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

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

• PubMed: 22239621 
• DOI: 10.1021/ja208338j
• Primary Citation of Related Structures:  
  2LLP


• 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 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.

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Organizational Affiliation: 

Magnetic Resonance Center (CERM), University of Florence, Via L. Sacconi 6, 50019 Sesto Fiorentino, Italy. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Collagen alpha-1(I) chain	A, B, C	18	Homo sapiens	Mutation(s): 0  Gene Names: COL1A1
UniProt & NIH Common Fund Data Resources
Find proteins for P02452 (Homo sapiens) Explore P02452  Go to UniProtKB:  P02452
PHAROS:  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

Entry History 

Deposition Data

• Deposited Date: 2011-11-15 
• Released Date: 2012-05-30 
Deposition Author(s): Bertini, I., Fragai, M., Luchinat, C., Melikian, M., Toccafondi, M., Lauer, J.L., Fields, G.B.

Revision History  

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