An unusual mechanism of cell contraction: Leptodiscinae Dinoflagellates
作者:
Jean Cachon,
Monique Cachon,
期刊:
Cell Motility
(WILEY Available online 1984)
卷期:
Volume 4,
issue 1
页码: 41-55
ISSN:0271-6585
年代: 1984
DOI:10.1002/cm.970040106
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Leptodiscinae;Dinoflagellates;contractility;non‐actin filaments
数据来源: WILEY
摘要:
AbstractThe Leptodiscinae, a group of marine Dinoflagellates, are good material for the study of contraction though they cannot be collected in abundance. Their cell bodies are flattened anteroposteriorly (Leptodiscus, Leptophyllus, and Leptospathium) and are able to contract suddenly when the surrounding water is disturbed.Electron microscopical observations have shown that the structures responsible for the contraction consist of a layer of parallel filaments located beneath the cell membrane of some specialized parts of the body. These filaments seem to be nonactin (NAF) because of their diameter (2.5–3 nm) and because they are not decorated by heavy meromyosin (HMM). They appear helically coiled and doubly twisted, and form tubular structures when contracte
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