منابع مشابه
Cohesin gets pushed around
Cohesin gets pushed around ings of cohesin hold together sister chromatids. Armelle and colleagues now suggest that cohesin rings get pushed to their final resting places by transcription complexes. Cohesins are known to bind a heterochromatin protein at centromeres, but previous reports of cohesin localization on chromosome arms were incomplete. The authors did a comprehensive survey of four b...
متن کاملMyosin light chain phosphatase: it gets around.
The importance of Ca 2 /calmodulin-dependent myosin light chain kinase (MLCK) for smooth muscle contraction is well documented.1 Until recently, myosin light chain (MLC) phosphatase was thought to be unregulated and constitutively active. However, studies have demonstrated that smooth muscle contraction is dependent on regulation of MLC phosphatase activity.2,3 The inhibition of phosphatase act...
متن کاملQuantized motion of a particle pushed around by waves
When a marble rolls down a sloped surface it eventually oscillates about a low point. With friction, it finally comes to a rest at the low point. Electrons are pulled towards an atomic nucleus like the marble is pulled downhill towards a low point by gravity. There are no frictional forces on the electron, but an electron circling around a nucleus creates radiation and these electromagnetic wav...
متن کاملTranscription Factor Binding in Human Cells Occurs in Dense Clusters Formed around Cohesin Anchor Sites
During cell division, transcription factors (TFs) are removed from chromatin twice, during DNA synthesis and during condensation of chromosomes. How TFs can efficiently find their sites following these stages has been unclear. Here, we have analyzed the binding pattern of expressed TFs in human colorectal cancer cells. We find that binding of TFs is highly clustered and that the clusters are en...
متن کاملThe motion of a pushed, sliding object
In many robotic applications, manipulation planning for an object free to slide on a surface is an import; oblem. Physical analysis of the object's motion is made difficult by the absence of information about 1 stribution of support of die object, and of the resulting frictional forces. This paper describes a n iproach to the analysis of sliding motion. The instantaneous motion of the object ca...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 2004
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb1662rr1