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Crystal structure of the bacterial cell division regulator MinD
1MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK. scc23@mrc-lmb.cam.ac.uk
FEBS Letters
|March 15, 2001
Summary
MinD protein is crucial for bacterial cell division, ensuring it occurs at the cell mid-point. Researchers determined the crystal structure of MinD-1, revealing its nucleotide-binding properties and unique monomeric form.
Area of Science:
- Microbiology
- Structural Biology
- Biochemistry
Background:
- MinD protein regulates bacterial cell division by inhibiting division at incorrect sites.
- MinD interacts with MinC to form a division inhibitor and with MinE for mid-cell specificity.
Purpose of the Study:
- To determine the crystal structure of MinD-1 from Archaeoglobus fulgidus.
- To elucidate the structural characteristics and nucleotide-binding properties of MinD.
Main Methods:
- Crystal structure determination of MinD-1 using multiple anomalous dispersion.
- Analysis of the protein fold and comparison with related proteins.
Main Results:
- The crystal structure of MinD-1 was solved to 2.6 A resolution.
- MinD-1 exhibits a classic nucleotide-binding protein fold, featuring a seven-stranded parallel beta-sheet surrounded by alpha-helices.
- MinD-1 was found to be a monomer, distinct from its typically dimeric interacting partners.
Conclusions:
- The determined structure provides insights into MinD's nucleotide-binding capabilities.
- The monomeric nature of MinD-1 is a significant structural finding, differing from related proteins.