PROTEINS COVER:

Electrostatic potential on the van der Waals surface of the rhinovirus coat protein monomer. The potential is obtained by solving the full nonlinear Poisson-Boltzmann equation using a multigrid-based Newton iterative algorithm. See the article by M. Holst et al., this issue (Proteins, Volume 18, Number 3, March 1994), page 231.

pb_cover