The dynamics of different helical protein-like chains translocating through a channel has been studied by Dynamical Monte Carlo (DMC) simulation.Translocation time

translocation probability

the number of monomers inside channel nin

shape factor and mean-square displacement of center of mass g are discussed.It is shown translocation time of protein-like chain with small helical energy is short

and changes little.However

for chains of large helical energy

the translocation time quickly increases when h becomes stronger.The results show that the translocation probability is smaller as the electric field becomes stronger.For different helical chains the translocation probability of h=0 is the largest

about 80%

smaller than that of SAW chain.But it suddently drops for h=-0.5.Then the translocation probability increases again as the helical energy becomes stronger.Furthermore

the curve of nin shows the translocation process of SAW chains is more steady than that of protein-like chains.The maximum value in the curves of suggests there exists the loosest conformation during translocation.Another discussion about the mean-square displacement of center of mass g shows that g of h=0 changes faster than others.It shows diffusion of h=0 is the fastest.It is also observed that the value g of h=-3.0 changes faster than that of h=-1.5.The discussion of shape factor and mean-sqare displacement can explain the different properties of different helical protein-like chains.All these studies will be useful for the complex translocation behaviors of macromolecules.