4M6A image
Entry Detail
PDB ID:
4M6A
Keywords:
DE NOVO PROTEIN
Title:
N-Terminal beta-Strand Swapping in a Consensus Derived Alternative Scaffold Driven by Stabilizing Hydrophobic Interactions
Biological Source:
Source Organism:
synthetic construct
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2013-08-09
Release Date:
2014-02-26
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.71 Å
R-Value Free:
0.29
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
P 1 21 1
4M6A validation report
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Tencon
Chain IDs:A, B, C, D, E, F, G, H, I, J
Chain Length:92
Number of Molecules:10
Biological Source:synthetic construct
Primary Citation
N-terminal beta-strand swapping in a consensus-derived alternative scaffold driven by stabilizing hydrophobic interactions.
Proteins 82 1527 1533 (2014)
PMID: 24464739 DOI: 10.1002/prot.24517

Abstact

The crystal structure of an N-terminal β-strand-swapped consensus-derived tenascin FN3 alternative scaffold has been determined. A comparison with the unswapped structure reveals that the side chain of residue F88 orients differently and packs more tightly with the hydrophobic core of the domain. Dimer formation also results in the burial of a hydrophobic patch on the surface of the domain. Thus, it appears that tighter packing of F88 in the hydrophobic core and burial of surface hydrophobicity provide the driving forces for the N-terminal β-strand swapping, leading to the formation of a stable compact dimer.

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Primary Citation of related structures
3TES