ArticleThe Journal of cell biology1987
Dynamic aspects of the contractile system in Physarum plasmodium. III. Cyclic contraction-relaxation of the plasmodial fragment in accordance with the generation-degeneration of cytoplasmic actomyosin fibrils.
Article in The Journal of cell biology, 1987. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 34 citations in OpenAlex.
- Calcium inhibition as an intracellular signal for actin-myosin interaction.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2016Article
- Periodic traction in migrating large amoeba of Physarum polycephalum.Journal of the Royal Society, Interface · 2015Article
- Mitosis: spindle evolution and the matrix model.Protoplasma · 2009Article
- Birefringence imaging directly reveals architectural dynamics of filamentous actin in living growth cones.Molecular biology of the cell · 1999Article
- Regulation by Ca(2+)-calmodulin of the actin-bundling activity of Physarum 210-kDa protein.Journal of muscle research and cell motility · 1992Article
- Model of the Ca2+ oscillator for shuttle streaming in Physarum polycephalum.Biophysical journal · 1992Article
- Control of actin filament length by phosphorylation of fragmin-actin complex.The Journal of cell biology · 1990Article
- Dynamic organization of ATP and birefringent fibrils during free locomotion and galvanotaxis in the plasmodium of Physarum polycephalum.The Journal of cell biology · 1990Article
- Fluorescent phallotoxins as probes for filamentous actin.Journal of muscle research and cell motility · 1988Review
- Purification of myxamoebal fragmin, and switching of myxamoebal fragmin to plasmodial fragmin during differentiation of Physarum polycephalum.Journal of muscle research and cell motility · 1988Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plasmodial fragments of Physarum polycephalum, excised from anterior regions of a thin-spread plasmodium, contracted-relaxed cyclicly with a period of 3-5 min. The area of the fragments decreased approximately 10% during contraction. In most cases, there was little endoplasmic streaming which indicates that contractions were synchronized throughout the fragment. By both polarized light and fluorescence microscopy, the organization and distribution of the cytoplasmic actomyosin fibrils in the fragments changed in synchrony with the contraction cycle. The fibrils formed during the contraction phase, and finally became a highly organized framework consisting of a three-dimensional network of numerous fibrils with many converging points (the nodes). During relaxation, the fibrils degenerated and disappeared almost completely, though some very weak fibrils remained near the nodes and the periphery. The results obtained by fluorometry of the fragments, stained with rhodamine-phalloidin, suggested that the G-F transformation of actin is not the main underlying process of the fibrillar formation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.