Table 1.

Relationships between cytochrome-c number, Mn/Fe ratio and radioresistance of different bacterial strains.

Species	Genome Size (Mb)	Number of Cytochrome C	Intracellular Mn/Fe Ratio	DRD (kGy)
Deinococcus radiodurans	3.28	7	0.24	10–12
D. geothermalis	3.23	7	0.46	10
Escherichia coli	4.64	6	0.007	0.7
Pseudomonas putida	6.18	17	<0.001	0.25
Shewanella odeinensis	5.13	39	<0.001	0.07

Adapted from Daly et al. [26]; DRD: Decimal Reduction Dose.