Chapter 18
Cell Division
In eukaryotes, the cell division cycle is divided into distinct, coordinated cellular processes that include cell growth, DNA replication/chromosome…
The process of chromosome duplication during cell division requires genome-wide disruption and re-assembly of chromatin. The chromatin structure must…
Condensins are large protein complexes that use ATP to fuel the assembly of chromosomes during mitosis. They transform the tangled, shapeless mass of…
The mitotic spindle—or spindle apparatus—is a eukaryotic, cytoskeletal structure made up of long protein fibers called microtubules.…
Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound…
Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the…
During mitosis, chromosome movements occur through the interplay of multiple piconewton level forces. In prometaphase, these forces help in…
At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister…
Microtubules form through the end-to-end polymerization of tubulin heterodimers. Kinetochore microtubules originate from the spindle poles, and their…
The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by…
Positioning the cell division plane is a critical step during development and cell differentiation, particularly during mitosis when the plane is…
Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody,…
Mitosis is critical for organismal growth and differentiation. The process is highly dynamic and requires ordered events to accomplish proper…
Reconstitution of Basic Mitotic Spindles in Spherical Emulsion Droplets
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Mitotic spindle assembly, positioning and orientation depend on the combined forces generated by microtubule dynamics, microtubule motor proteins and…