[Water distribution around a protein molecule from data on spatial structure].

Water distribution was calculated using the structure data of protein rubredoxin (K. Watenlaugh et al. J. Mol. Biol., 138, 615, 1980). By this method the hydration surrounding of macromolecules was localized in the spheres of the 3,2 A radius with the error 8%. A detailed analysis of the data on water localization in the protein crystal shows that hydration water distribution consists of the associates of water molecules and does not form the "hydration shell".