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Dynamics of Membrane Lipids

Molecules are not static, but rather are dynamic. This also applies to molecular aggregates. In the first part of the section, we will discuss the rigid movement of whole lipid molecules in a bilayer, within a leaftlet and between leaflets.  In the second part and the following supplement, we will consider the movement of atoms within a molecule.  The movements include motions like bond bending, bond stretching and torsion angle changes like we saw in the previous chapter section on the conformations of n-butane.  The position of all atoms within a molecule can be simulated as a function of time - a molecular dynamics simulation.  Such motions affect the energy of the molecule, which can be calculated for given atom positions using classical molecular mechanics and electrostatics.


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