..." D. radiodurans nucleoids. They found that its nucleoid adopts an unusual ring shape. It is known that in vitro DNA tends to form toroidal aggregates in the presence of condensing agents (21).
.. In these toroids, DNA molecules are condensed in a closely packed hexagonal arrangement (20). Levin-Zaidman at al. assumed that the ring-shaped nucleoid of D. radiodurans has basically the same structure.
..The hypothesis has been made that the toroidal shape facilitates repair of the fragmented genome because its densely packed structure prevents double-stranded DNA break ends from diffusing (13, 29). "...
Alternatively or both it could be the ternary/trinary molecular combination.
.." Dubbed “Conan the Bacterium” for its extraordinary ability to tolerate the harshest of conditions, Deinococcus radiodurans can withstand radiation doses thousands of times higher than what would kill a human — and every other organism, for that matter. "..
..." “We’ve long known that manganese ions and phosphate together make a strong antioxidant, but discovering and understanding the ‘magic’ potency provided by the addition of the third component is a breakthrough. "..