Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 28.86 kDa 
• Atom Count: 1555 
• Modelled Residue Count: 227 
• Deposited Residue Count: 256 
• Unique protein chains: 1

4AK3

Crystal structure of Human fibrillar procollagen type III C- propeptide trimer

• DOI: 10.2210/pdb4AK3/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): Yes 


• Deposited: 2012-02-21 Released: 2012-09-12 
• Deposition Author(s): Bourhis, J.M., Mariano, N., Zhao, Y., Harlos, K., Jones, E.Y., Moali, C., Aghajari, N., Hulmes, D.J.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.337 
• R-Value Work: 0.283 
• R-Value Observed: 0.285 

Literature

Structural Basis of Fibrillar Collagen Trimerization and Related Genetic Disorders.

Bourhis, J.M., Mariano, N., Zhao, Y., Harlos, K., Exposito, J., Jones, E.Y., Moali, C., Aghajari, N., Hulmes, D.J.S.

(2012) Nat Struct Mol Biol 19: 1031

• PubMed: 23001006 
• DOI: 10.1038/nsmb.2389
• Primary Citation of Related Structures:  
  4AK3, 4AE2, 4AEJ


• PubMed Abstract: 
  

The C propeptides of fibrillar procollagens have crucial roles in tissue growth and repair by controlling both the intracellular assembly of procollagen molecules and the extracellular assembly of collagen fibrils. Mutations in C propeptides are associated with several, often lethal, genetic disorders affecting bone, cartilage, blood vessels and skin. Here we report the crystal structure of a C-propeptide domain from human procollagen III. It reveals an exquisite structural mechanism of chain recognition during intracellular trimerization of the procollagen molecule. It also gives insights into why some types of collagen consist of three identical polypeptide chains, whereas others do not. Finally, the data show striking correlations between the sites of numerous disease-related mutations in different C-propeptide domains and the degree of phenotype severity. The results have broad implications for understanding genetic disorders of connective tissues and designing new therapeutic strategies.

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Related Citations: 

• Production and Crystallization of the C-Propeptide Trimer from Human Procollagen III.
  Bourhis, J.M., Mariano, N., Zhao, Y., Walter, T.S., El Omari, K., Delolme, F., Moali, C., Hulmes, D.J., Aghajari, N.
  (2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 1209

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Organizational Affiliation: 

Formation de Recherche en Evolution 3310, Institut de Biologie et Chimie des Protéines, Centre National de la Recherche Scientifique, Université Lyon 1, Lyon, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
COLLAGEN ALPHA-1(III) CHAIN	A	256	Homo sapiens	Mutation(s): 1  Gene Names: COL3A1
Find proteins for P02461 (Homo sapiens) Explore P02461  Go to UniProtKB:  P02461
NIH Common Fund Data Resources
PHAROS:  P02461 GTEx:  ENSG00000168542

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.337 
• R-Value Work: 0.283 
• R-Value Observed: 0.285 
• Space Group: P 3 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 86.047	α = 90
b = 86.047	β = 90
c = 72.952	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-02-21 
• Released Date: 2012-09-12 
Deposition Author(s): Bourhis, J.M., Mariano, N., Zhao, Y., Harlos, K., Jones, E.Y., Moali, C., Aghajari, N., Hulmes, D.J.S.

Revision History  

• Version 1.0: 2012-09-12
  Type: Initial release
  
• Version 1.1: 2012-10-17
  Changes: Database references
• Version 1.2: 2012-10-31
  Changes: Database references