منابع مشابه
Falling apart
Destabilized nanobodies can be used to deliver fluorescent proteins and enzymes to specific targets inside cells.
متن کاملChromosome Cohesion: A Cycle of Holding Together and Falling Apart
A ll organisms have mechanisms to ensure that dividing cells produce new cells with the proper number of chromosomes. The dividing cell closely monitors that chromosomes are copied exactly once and then distributed correctly to daughter cells. After replication, the chromosomes (now comprising two chromatids) align at the center of the cell, and are attached to a structure known as the spindle ...
متن کاملSister chromatid separation: Falling apart at the seams
Cohesion between sister chromatids must be dissolved at the time of chromosome segregation. Recent studies reveal that the principles of cohesion dissolution in mitosis and meiosis are the same, but that there are important differences that stem from the distinct natures of these two processes.
متن کاملPolyketide and non-ribosomal peptide synthases: falling together by coming apart.
M icroorganisms have invented many devious ways to thwart their foes and survive in adverse environments. Non-motile microbes, especially ones that inhabit soil and marine environments, are noted for an ability to produce a wide range of chemicals (1). These are usually called ‘‘secondary metabolites,’’ because of their seeming dispensability for the organism’s ontogeny. It is obvious from the ...
متن کاملThe Falling Apart of the Tagged Fragment and the Asymptotic Disintegration of the Brownian Height Fragmentation
We present a further analysis of the fragmentation at heights of the normalized Brownian excursion. Specifically we study a representation for the mass of a tagged fragment in terms of a Doob transformation of the 1/2-stable subordinator and use it to study its jumps; this accounts for a description of how a typical fragment falls apart. These results carry over to the height fragmentation of t...
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ژورنال
عنوان ژورنال: Nature
سال: 1995
ISSN: 0028-0836,1476-4687
DOI: 10.1038/374499a0