A cytokinesis checkpoint requiring the yeast homologue of an APC-binding protein

Article Abstract:

The cell-division cycle is regulated by checkpoint controls. Yeast may have a mutation in dynein, a motor protein, and this means that there is often a misalignment of the mitotic spindle, which leads to a delay in cytokinesis until the spindle has found its correct position. Mutuations exist that can abolish the delay and this indicates a new checkpoint control. One checkpoint mechanism appears to be activated by cold temperature which causes mitotic spindles to become misaligned.

Cell division, Tumor suppressor genes, Yeast fungi, Microbial biotechnology, Yeasts (Fungi)

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Microscopic artificial swimmers

Article Abstract:

A demonstration that a linear chain of colloidal magnetic particles linked by DNA and attached to a red blood cell could act as a flexible artificial flagellum is presented. Results reveal that the actuation induces a beating pattern that propels the structure, and that the external fields could be adjusted to control the velocity and the direction of motion.

DNA, Eukaryotes, Microbiological chemistry, Magnetic properties

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