BRIDGES BETWEEN MICROTUBULES
نویسندگان
چکیده
منابع مشابه
Bridges between Microtubules
Bridges between microtubules have been studied with the electron microscope in the axostyle of Saccinobaculus and in various tubule systems of chicken testis, including the helix of tubules surrounding the elongating spermatid nucleus and the flagellum of the sperm tail. In addition to the previously described periodic bridges, evidence is presented that nonperiodic bridges exist between certai...
متن کاملStructural cross-bridges between microtubules and mitochondria in central axons of an insect (Periplaneta americana).
The distribution of microtubules and mitochondria in central axons of an insect (Periplaneta americana) is assessed by comparison between counts on micrographs and computed axon random 'models'. These studies show that the observed multiple association of microtubules with individual mitochondria is statistically highly significant. Electron micrographs of thin sections show that linkage is eff...
متن کاملFreeze-fracture of Microtubules and Bridges in Motile Axostyles
A freeze-fracture study of the motile axostyles of the flagellate protozoa Saccinobaculus and Pyrsonympha has been undertaken in order to obtain a view of the relationships of microtubules and their cross bridges not dependent on conventional preparative procedures. Reactivation studies using isolated axostyles prepared for freeze-fracture and then thawed demonstrate that we are observing the s...
متن کاملArms and Bridges on Microtubules in the Mitotic Apparatus
Except for reported differences in diameters, the findings on fine structure of microtubules (MT) involved in mitosis and meiosis are consistent throughout the literature. Whatever the sources of cells for study, plant (14, 10, 17, 6) or animal (14, 9, 13, 20), no deviations have turned up, other than in centrioles which have tubules arrayed in triplets. Exceptions to the MT structure of the mi...
متن کاملCross-bridges on the Microtubules of Cooled Interphase Hela Cells
Electron micrographs of spindle microtubules of plant (5, 6, 11) and animal cells (2, 6) in division show electron-opaque projections at right angles to the tubule axes . These have been interpreted as cross-bridges, and it has been proposed that they may participate in the movement of chromosomes (7) . Cross-bridges have also been observed in a variety of specialized structures that consist of...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1974
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.61.1.166