The crystal structure of Dps, a ferritin homolog that binds and protects DNA - PubMed (original) (raw)
Comparative Study
doi: 10.1038/nsb0498-294.
Affiliations
- PMID: 9546221
- DOI: 10.1038/nsb0498-294
Comparative Study
The crystal structure of Dps, a ferritin homolog that binds and protects DNA
R A Grant et al. Nat Struct Biol. 1998 Apr.
Abstract
The crystal structure of Dps, a DNA-binding protein from starved E. coli that protects DNA from oxidative damage, has been solved at 1.6 A resolution. The Dps monomer has essentially the same fold as ferritin, which forms a 24-mer with 432 symmetry, a hollow core and pores at the three-fold axes. Dps forms a dodecamer with 23 (tetrahedral) point group symmetry which also has a hollow core and pores at the three-folds. The structure suggests a novel DNA-binding motif and a mechanism for DNA protection based on the sequestration of Fe ions.
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