2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/21177The curvature stress of DNA packed inside a phage is balanced against its electrostatic self-interaction. The DNA density is supposed nonuniform and as a result the Donnan effect is also inhomogeneous. The coarse-grained DNA density is a nonlinear function of the DNA radius of curvature at a given position inside the bacteriophage. It turns out that a region (or regions) exists totally free from DNA. The size of such holes is computed.11 pages, 2 figures, submitted to J. Phys. Chem. B (special Polyelectrolytes issue)Soft Condensed MatterQuantitative Biologytext