Reversible Mechanochemical Cycle in the Contraction of Vorticella View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1971-01

AUTHORS

W. B. AMOS

ABSTRACT

THE ciliate Vorticella has a stalk which is capable of coiling into a helix. The coiling is produced by the contraction of an intracytoplasmic thread, the spasmoneme, within a cylindrical sheath. Hoffmann-Berling1 observed that the stalks of gly-cerinated preparations coiled in the presence of calcium ions and uncoiled when calcium was subsequently removed by the addition of ethylene diamine tetraacetate (EDTA), and that many cycles of contraction and relaxation could be produced by repeating this procedure, without adding adenosine triphos-phate (ATP). He also found that contraction was not abolished by ATPase inhibitors. Townes and Brown2, however, were later unable to obtain reversible contractions. The behaviour of glycerinated preparations was therefore investigated under precisely defined conditions. More... »

PAGES

127

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/229127a0

DOI

http://dx.doi.org/10.1038/229127a0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1005667906

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/4992376


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