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本帖最后由 细胞海洋 于 2012-12-9 19:49 编辑 3 @' @5 z* q' u. q# H. H7 u: B
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0 Z* r3 T9 C+ y$ C" |+ i9 W. g4 U3 gCOVER 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 9 N6 ]2 n$ h" J9 i- Q$ x/ a: F% |1 w
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