Molecular dynamics simulations of biological membranes have come of age. Si
mulations of pure lipid bilayers are extending our understanding of both op
timal simulation procedures and the detailed structural dynamics of lipids
in these systems. Simulation methods established using simple bilayer-embed
ded peptides are being extended to a wide range of membrane proteins and me
mbrane protein models, and are beginning to reveal some of the complexities
of membrane protein structural dynamics and their relationship to biologic
al function.