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. 2011 Oct 19;11:41. doi: 10.1186/1472-6807-11-41

Table 1.

Crystallographic data used to study the hydration of the unpaired RNA bases

Base Total number
of bases
Number
of bases*
Number
of unpaired bases*
Number
of waters around
unpaired bases*
Adenine 18.756 405 197 719

Guanine 25.286 554 128 474

Cytosine 19.548 407 82 250

Uracil 14.032 355 138 373

* Data obtained for the X-ray RNA structures with the resolution better than 2.0 Å