本帖最后由 细胞海洋 于 2012-12-9 19:49 编辑 - L4 T4 U; \8 ?( _3 e0 V0 m1 k s4 h* V) | + s' |7 t2 `' g % C; q3 ]- [! ?1 FCOVER End-on view of the atomic model of the bacterial actinlike ParM protein double-helical filament, generated from an electron microscopic reconstruction. A bipolar spindle of antiparallel ParM filaments pushes plasmids to the cell poles, constituting the simplest known apparatus for the segregation of genetic information. The loops on the outside of the 8- to 9-nanometer-thick filaments are involved in spindle formation. See page 1334. Image: Jan Löwe ; _) B5 t6 [# Q E- V( i9 n- `2 P# |9 v2 e) U9 c 作者: Hongwu 时间: 2012-12-17 08:49