The bacterial flagellar filament is a helical, self-assembling polymer of flagellin monomers. |
The amino acid side chains extend radially outward, away from the helical backbone. |
Several such kinks spaced in helical phase will yield a molecule with a more or less planar curvature. |
It has been proposed that the fusion peptide is obliquely inserted into the target membrane as a flexible monomer in an helical conformation. |
The longer the peptide, the less important is the effect of the helical dipole. |
The helical segments were presumed to be elements of stem-loop structures formed when the RNA was condensed and encapsidated by the protein. |