A hybrid model for erythrocyte membrane: a single unit of protein network coupled with lipid bilayer.
A hybrid model for erythrocyte membrane: a single unit of protein network coupled with lipid bilayer.
复制标题
红细胞膜的混合模型:与脂质双层耦合的单个蛋白质网络单元。
DOI:
10.1529/biophysj.106.094383
复制
发表时间:
2007
影响因子:
3.4
通讯作者:
Amy Sungy
中科院分区:
文献类型:
--
作者:
Q. Zhu;C. Vera;R. Asaro;P. Sche;Amy Sungy
To investigate the nanomechanics of the erythrocyte membrane we developed a hybrid model that couples the actin-spectrin network to the lipid bilayer. This model features a Fourier space Brownian dynamics model of the bilayer, a Brownian dynamics model of the actin protofilament, and a modified wormlike-chain model of the spectrin (including a cable-dynamics model to predict the oscillation in tension). This model enables us to predict the nanomechanics of single or multiple units of the protein network, the lipid bilayer, and the effect of their interactions. The present work is focused on the attitude of the actin protofilament at the equilibrium states coupled with the elevations of the lipid bilayer through their primary linkage at the suspension complex in deformations. Two different actin-spectrin junctions are considered at the junctional complex. With a point-attachment junction, large pitch angles and bifurcation of yaw angles are predicted. Thermal fluctuations at bifurcation may lead to mode-switching, which may affect the network and the physiological performance of the membrane. In contrast, with a wrap-around junction, pitch angles remain small, and the occurrence of bifurcation is greatly reduced. These simulations suggest the importance of three-dimensional molecular junctions and the lipid bilayer/protein network coupling on cell membrane mechanics.
登录
查看更多内容
影响因子:
20.3
作者:
WC Horne;SC Huang;PS Becker;TK Tang;EJ Jr Benz
通讯作者:
WC Horne;SC Huang;PS Becker;TK Tang;EJ Jr Benz
影响因子:
3.4
作者:
Karel Svoboda;Christoph F. Schmidt;Daniel Branton;Steven M. Block
通讯作者:
Karel Svoboda;Christoph F. Schmidt;Daniel Branton;Steven M. Block
影响因子:
3.7
作者:
Risinger,MA;Korsgren,C;Cohen,CM
通讯作者:
Cohen,CM
影响因子:
20.3
作者:
Liu,SC;Palek,J;Yi,SJ;Nichols,PE;Derick,LH;Chiou,SS;Amato,D;Corbett,JD;Cho,MR;Golan,DE
通讯作者:
Golan,DE
DOI:
--
发表时间:
1992
期刊:
The Chinese journal of physiology
影响因子:
--
作者:
Sung,KL;Chien,S
通讯作者:
Chien,S