3R9I image
Entry Detail
PDB ID:
3R9I
Title:
2.6A resolution structure of MinD complexed with MinE (12-31) peptide
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2011-03-25
Release Date:
2011-08-17
Method Details:
Experimental Method:
Resolution:
2.60 Å
R-Value Free:
0.24
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Septum site-determining protein minD
Mutations:D40A
Chain IDs:A, B, C, D
Chain Length:260
Number of Molecules:4
Biological Source:Escherichia coli
Polymer Type:polypeptide(L)
Description:Cell division topological specificity factor
Chain IDs:E, F, G, H
Chain Length:20
Number of Molecules:4
Biological Source:Escherichia coli
Ligand Molecules
Primary Citation
The Min Oscillator Uses MinD-Dependent Conformational Changes in MinE to Spatially Regulate Cytokinesis.
Cell(Cambridge,Mass.) 146 396 407 (2011)
PMID: 21816275 DOI: 10.1016/j.cell.2011.06.042

Abstact

In E. coli, MinD recruits MinE to the membrane, leading to a coupled oscillation required for spatial regulation of the cytokinetic Z ring. How these proteins interact, however, is not clear because the MinD-binding regions of MinE are sequestered within a six-stranded β sheet and masked by N-terminal helices. minE mutations that restore interaction between some MinD and MinE mutants were isolated. These mutations alter the MinE structure leading to release of the MinD-binding regions and the N-terminal helices that bind the membrane. Crystallization of MinD-MinE complexes revealed a four-stranded β sheet MinE dimer with the released β strands (MinD-binding regions) converted to α helices bound to MinD dimers. These results identify the MinD-dependent conformational changes in MinE that convert it from a latent to an active form and lead to a model of how MinE persists at the MinD-membrane surface.

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Primary Citation of related structures