منابع مشابه
Bacterial sporulation: Pole-to-pole protein oscillation
Sporulating bacteria need to temporally coordinate DNA replication, chromosome partitioning and sporulation initiation. Recent work has shown that one aspect of this coordination lies with the interdependent subcellular localization of two proteins, Spo0J and Soj, and in the Spo0J-dependent spatial oscillation of Soj.
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Spindle orientation defines the plane of cell division and, thereby, the spatial position of all daughter cells. Here, we develop a live cell microscopy-based methodology to extract spindle movements in human epithelial cell lines and study how spindles are brought to a pre-defined orientation. We show that spindles undergo two distinct regimes of movements. Spindles are first actively rotated ...
متن کاملThe Vesta gravity field, spin pole and rotation period, landmark positions, and ephemeris from the Dawn tracking and optical data
The Vesta gravity field and related physical parameters have been precisely measured using 10-months of radiometric Doppler and range data and optical landmark tracking from the Dawn spacecraft. The gravity field, orientation parameters, landmark locations, and Vesta’s orbit are jointly estimated. The resulting spherical harmonic gravity field has a half-wavelength resolution of 42 km (degree 2...
متن کاملMaloriented bivalents have metaphase positions at the spindle equator with more kinetochore microtubules to one pole than to the other.
To test the "traction fiber" model for metaphase positioning of bivalents during meiosis, kinetochore fibers of maloriented bivalents, induced during recovery from cold arrest, were analyzed with a liquid crystal polarizing microscope. The measured birefringence retardation of kinetochore fibers is proportional to the number of microtubules in a fiber. Five of the 11 maloriented bivalents analy...
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ژورنال
عنوان ژورنال: Nature Climate Change
سال: 2008
ISSN: 1758-678X,1758-6798
DOI: 10.1038/climate.2008.132