منابع مشابه
Microfilaments and Cell Locomotion
The role of microfilaments in generating cell locomotion has been investigated in glial cells migrating in vitro. Such cells are found to contain two types of microfilament systems: First, a sheath of 50-70-A in diameter filaments is present in the cytoplasm at the base of the cells, just inside the plasma membrane, and in cell processes. Second, a network of 50-A in diameter filaments is found...
متن کاملMicrotubules and Microfilaments in Cell Morphogenesis in Higher Plants
Microtubules and microfilaments play important roles in cell morphogenesis. The picture emerging from drug studies and molecular-genetic analyses of mutant higher plants defective in cell morphogenesis shows that the roles played by them remain the same in both tip-growing and diffuse-growing cells. Microtubules are important for establishing and maintaining growth polarity whereas actin microf...
متن کاملActin-Based Cell Motility and Cell Locomotion
they move. Deadhesion/tail retraction may limit moveIntroduction ment rate in such cells. In weakly adhesive, fast moving Most animal cell types possess the capacity to move cells such as amoebae and white blood cells, the tail is over or through a substrate, and cell locomotion plays more rounded and this step is more efficient. Adhesion a key role in bothnormal physiology and disease.Certain ...
متن کاملCrawling cell locomotion revisited.
C ell crawling is of primary importance for such fundamental biological processes as embryonic development, wound healing, inflammation, and cancer metastasis (1). Motion of cells along extracellular substrates or matrices requires an apparently very simple condition: a fairly small force has to be applied to the cell to move it against the friction between the cell surface and the surrounding ...
متن کاملWorm Sperm and Advances in Cell Locomotion
Across the animal kingdom, fertilization requires the encounter between a large stationary egg and small motile sperm. To maximize their likelihood of reaching the egg before their competition, sperm are extraordinarily specialized cells, generally consisting of little more than a haploid nucleus, mitochondria to generate energy, and a highly efficient movement engine. Almost all animal sperm a...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1971
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.49.3.595