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Torsional Movements in the Ameba, Chaos carolinensis , Suggest a Helical Cytoskeletal Organization * †
Author(s) -
BYNUM R. D.,
ALLEN‡ R. D.
Publication year - 1980
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1980.tb05388.x
Subject(s) - anatomy , dorsum , biology , pseudopodia , actin , microbiology and biotechnology
SYNOPSIS. Centrifugation for 30–40 seconds at 8,000 g has been used to render monopodial specimens of the large free‐living ameba. Chaos carolinensis . These monopodial amebae exhibit obvious torsional movements in the tail. In many cases the posterior ectoplasm assumes the form of a screw with helical ridges forming in place of the more common straight dorsal fins. This finding prompted a re‐examination of normal polypodial C. carolinensis , and a majority of these were found also to exhibit torsional movement in the tail and in retracting pseudopodia. These movements suggest that the cytoskeleton of Chaos may have a helical component in its organization.