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Biofilm and Quorum Sensing in Archaea

100%

Pawlikowska-Warych M., Tokarz-Deptula B., Czuprynska P., Deptula W.

Acta Biologica

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2019

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tom 26

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Mechanics of stacked membrane compartments

100%

Derganc J., Bozic B., Zeks B., Svetina S.

Cellular and Molecular Biology Letters

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2001

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tom 06

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nr 2

3

The influence of Fusarium species on the ultrastructure of cells of potato tuber parenchyma. II. Cell organelles

86%

Mazurkiewicz-Zapalowicz K.

Hodowla Roślin, Aklimatyzacja i Nasiennictwo

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1993

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tom 37

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nr 1-2

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Cellular organelle transport and positioning by plasma streaming

86%

Wanka F., Van Zoelen E. J. J.

Cellular and Molecular Biology Letters

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2003

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tom 08

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nr 4

Our analysis of known data reveals that translocations of passively movable cellular organelles from tiny granules up to large cell nuclei can be ascribed to transport by streaming cytoplasm. The various behaviours, such as velocity changes during more or less interrupted movements, forth and back shuttling and particle rotation result from different types of plasma circulation. Fast movements over long distances, as observed in the large characean internodial cells occur in strong streams generated by myosin in bundles of actin filaments in the direction of the barbed filament ends. Slow movements with frequent reversions of the direction are typical for neuronal axons, in which an anterograde plasma flow, produced in a thin layer of membrane-attached actin filaments, is compensated by a retrograde stream, produced by dynein activity in the central bundle of microtubules. Here particle rotation is due to steep flow velocity gradients, and frequent changes of particle movements result from minor particle displacements in radial directions. Similar shuttling of pigment granules in the lobes of epidermal chromatophores results from the same mechanism, whereby the centrifugal movement along astral microtubules is due to flow generated by excess of kinesin activity and the centripetal movement to the plasma recycling through the intermicrotubular space. If the streaming pattern is reversed by switching to excess dynein activity, the moving granules are trapped in the high microtubule density at the aster center. The presence of larger bodies in asters disturbs the regular, kinesin-dependent microtubule distribution in such a way that a superimposed centrifugal plasma flow develops in the microtubule-dense layer along them, which is recycled in the microtubule-free space, created by their presence. Consequently, at excess kinesin activity, nuclei, mitochondria as well as chromosome fragments move towards the aster center until they reach a dynamically stabilized position that depends on the local microtubule density. These various behaviours are not rationally explainable by models based on a mechanical stepping along microtubules or actin filaments.

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Lead transport and localisation in Lupinus angustifolius L. root cells

72%

Balcerzak L., Godlewski M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

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Cytoskeleton in plant reproduction

72%

Bednara J., Pietrusiewicz J.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2008

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tom 50

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nr 1

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Assessment of biological activity of new compounds designated to act as lysosomotropes

72%

Kleszczynska H., Bonarska D., Luczynski J., Witek S., Sarapuk J.

Polish Journal of Environmental Studies

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2005

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tom 14

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nr 6

This work contains the results of studies on the influence of new lysosomotropic substances on an erythrocyte membrane. The compounds studied were hydrochlorides of N,N-dimethylglycine alkyl esters (DMG-n) and N,N-dimethylalanine alkyl esters (DMAL-n) having two different-length alkyl chains (n = 12 and 16), oxalates of dimethylaminoalaninates (DMALs -n; n = 8, 10, 12, 14 and 16) and methobromides of glycinates and alaninates (DMALM-12 and DMGM-12). They were found to hemolyze erythrocytes, to change their osmotic resistance and to influence erythrocyte membrane fluidity. The results obtained indicate that observed changes were dependent on lipophilicities of the compounds. It was especially evident in the case of hemolytic efficiencies of the homologous series of alanine oxalates. Also, DMG-n and DMAL-n compounds significantly differed in their hemolytic properties. Again, slightly better hemolytic efficiency of DMG compounds in comparison with corresponding compounds having the same alkyl chain, DMAL, confirm such a conclusion. However, their hemolytic efficiencies were found to be moderate, which makes them potentially useful membrane modifiers. That feature is important for lysosomotropic compounds and its confirmation was the primary aim of the presented work. It is worth mentioning that DMGM and DMALM compounds exhibited better hemolytic efficiencies than all other compounds studied – which is probably caused by the fact that they were used as bromides. Bromides are commonly found to be more active than compounds with other counterions.

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Phototransduction in Blepharisma and Stentor

58%

Fabczak S., Fabczak H.

Acta Protozoologica

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1995

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tom 34

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nr 1

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Rola apoptozy w fizjologii i patologii komorki

37%

Adamczyk M., Kostka G., Palut D.

Roczniki Państwowego Zakładu Higieny

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1998

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tom 49

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