The role of iron and copper on the oligomerization dynamics of DR_2577, the main S-layer protein of deinococcus radiodurans
Farci D.
First
;Guadalupi G.;Piano D.
2019-01-01
Abstract
Surface (S)-layers are cryptic structures that coat the external surface of the bacterial cell in many species. The paracrystalline regularity of the S-layer is due to the self-assembling of one or more protein units. The property of self-assembling seems to be mediated by specific topologies of the S-layer proteins as well as the presence of specific ions that provide support in building and stabilizing the bi-dimensional S-layer organization. In the present study, we have investigated the self-assembling mechanism of the main S-layer protein of Deinococcus radiodurans (DR_2577) finding an unusual role played by Fe3+ and Cu2+ in the oligomerization of this protein. These findings may trace a structural and functional metallo-mediated convergence between the role of these metals in the assembling of the S-layer and their well-known roles in protecting against oxidative stress in D. radiodurans.File | Size | Format | |
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2019_Frontiers Micro.pdf open access
Type: versione post-print
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1.11 MB | Adobe PDF | View/Open |
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