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The cytoskeleton in...
The cytoskeleton in fish melanophore melanosome positioning.
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- Nilsson Sköld, Helen, 1970 (author)
- Gothenburg University,Göteborgs universitet,Zoologiska institutionen, zoofysiologi,Department of Zoology, Zoophysiology
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- Aspengren, Sara, 1977 (author)
- Gothenburg University,Göteborgs universitet,Zoologiska institutionen, zoofysiologi,Department of Zoology, Zoophysiology
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- Wallin, Margareta, 1952 (author)
- Gothenburg University,Göteborgs universitet,Zoologiska institutionen,Department of Zoology
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(creator_code:org_t)
- 2002-09-19
- 2002
- English.
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In: Microscopy research and technique. - : Wiley. - 1059-910X. ; 58:6, s. 464-9
- Related links:
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https://gup.ub.gu.se...
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Abstract
Subject headings
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- Melanophore melanosomes organelles can be regulated to move and locate correspondingly to many other different organelle types. Comparing lessons from analysis of a specific melanosome distribution can, therefore, contribute to the understanding of distribution of other organelles, and vice versa. From such data, it is now generally accepted that microtubules provide directed long-distance movement, while cell peripheral movements include microfilaments. In fish melanophores, both actin and dynein exhibit counter-forces to the kinesin-like protein in maintaining the evenly dispersed state, while actin and kinesin exhibit counter-forces to dynein in many other systems. Lessons from elevating cAMP levels indicate the presence of a peripheral feedback regulatory system involved in maintaining the evenly dispersed state. Studies from dynein inhibition suggest that the kinesin-like protein involved in fish melanosome dispersal is regulated in contrast to many other systems. One would further expect melanosome transport to be regulated also on actin/myosin, in order to prevent actin-dependent capture of melanosomes during the microtubule-dependent aggregation and dispersion. General findings will be discussed in comparison with positioning and movement of other organelle types in cells. Finally, recent data on melanosome-dependent organising of microtubules show that dynein is involved in nucleating microtubules extending from melanosome aggregates in melanophore fragments.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Animals
- Biological Transport
- Cytoskeleton
- physiology
- Fishes
- anatomy & histology
- physiology
- Melanophores
- physiology
- ultrastructure
- Melanosomes
- physiology
- ultrastructure
- Microscopy
- Electron
Publication and Content Type
- ref (subject category)
- art (subject category)
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