We study the translocation of a protein-like chain through a finite cylindrical channel using the pruned-enriched Rosenbluth method （PERM） and the modified orientation-dependent monomer-monomer interaction （ODI） m...We study the translocation of a protein-like chain through a finite cylindrical channel using the pruned-enriched Rosenbluth method （PERM） and the modified orientation-dependent monomer-monomer interaction （ODI） model. Attractive channels （εcp = -2.0, -1.0, -0.5）, repulsive chanaels （εcp： 0.5, 1.0, 2.0）, and a neutral channel （εcp =- 0） are discussed. The results of the chain dimension and the energy show that Z0 ： 1.0 is an important case to distinguish the types of the channels. For the strong attractive channel, more contacts form during the process of translocation. It is also found that an external force is needed to drive the chain outside of the channel with the strong attraction. While for the neutral, the repulsive, and the weak attractive channels, the translocation is spontaneous.展开更多
基金Project supported by the National Natural Science Foundation of China （Grant No. 20904047）, the Science and Technology Planning Project of Zhejiang Province, China （Grant No. 20100022）, and the Natural Science Foundation of Zhejiang Province, China （Grant No. Y6110304）.
文摘We study the translocation of a protein-like chain through a finite cylindrical channel using the pruned-enriched Rosenbluth method （PERM） and the modified orientation-dependent monomer-monomer interaction （ODI） model. Attractive channels （εcp = -2.0, -1.0, -0.5）, repulsive chanaels （εcp： 0.5, 1.0, 2.0）, and a neutral channel （εcp =- 0） are discussed. The results of the chain dimension and the energy show that Z0 ： 1.0 is an important case to distinguish the types of the channels. For the strong attractive channel, more contacts form during the process of translocation. It is also found that an external force is needed to drive the chain outside of the channel with the strong attraction. While for the neutral, the repulsive, and the weak attractive channels, the translocation is spontaneous.
