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Topic: Vacuole


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  Vacuole Summary
Vacuoles and their contents are considered to be distinct from the cytoplasm, and are classified as ergastic according to some authors (Esau, 1965).
Another function of a central vacuole is that it pushes all contents of the cell's cytoplasm against the cellular membrane, and thus keeps the chloroplasts closer to light.
In budding yeast cells, vacuoles are the storage compartments of amino acids and the detoxification compartment, which are described in previous topics.
www.bookrags.com /Vacuole   (1625 words)

  
 Periodic tension development in the membrane of the in vitro contractile vacuole of Paramecium multimicronucleatum: ...
The contractile vacuole of the freshwater protozoan Paramecium
to the increased membrane tension of the in vivo contractile vacuole that
vitro contractile vacuole corresponded to the fluid-filling phase of the in
jeb.biologists.org /cgi/content/abstract/203/2/239   (558 words)

  
  Vacuole
The single large vacuole of the cell is surrounded by a membrane, called the tonoplast, and filled with a solution of water, dissolved ions, sugars, amino acids, and other materials.
Expansion of the vacuole by water intake is the major driving force in plant cell growth, and is also the means for maintaining cell rigidity, or turgor.
In a mature cell, the vacuole may occupy as much as 90 percent of the cell volume, such that the rest of the cell contents are flattened against the cell membrane.
www.biologyreference.com /Ta-Va/Vacuole.html   (230 words)

  
  Contractile Vacuole
A vacuole is a large membrane-bound compartment in certain eukaryotic cells that serve a variety of different functions.
Vacuoles may capture food or unwanted structural debris around the cell.
All vacuoles including contractile vacuoles are generally filled with cell sap, which is a liquid of varying composition.
www.iscid.org /encyclopedia/Contractile_Vacuole   (200 words)

  
 Reference.com/Encyclopedia/Vacuole
Vacuoles and their contents are considered to be distinct from the cytoplasm, and are classified as ergastic according to some authors.
Vacuoles also play a major role in autophagy, maintaining an inbalance between biogenesis (production) and degradation (or turnover), of many substances and cell structures.
Vacuoles in animals are a part of the processes of exocytosis and endocytosis.
www.reference.com /browse/wiki/Vacuoles   (926 words)

  
 Vesicle-Mediated Solute Transport between the Vacuole and the Plasma Membrane -- Echeverría 123 (4): 1217 -- ...
Note the proliferation of small vacuoles around the periphery of the secretory cell and their apparent association with the plasmalemma at the wall extension areas.
Mitchell HJ, Hardham AR (1999) Characterization of the water expulsion vacuole in Phytophthora nicotianae zoospores.
Verbelen JP, Tao W (1998) Mobile arrays of vacuole ripples are common in plant cells.
www.plantphysiol.org /cgi/content/full/123/4/1217   (4604 words)

  
 Mutations That Affect Vacuole Biogenesis Inhibit Proliferation of the Endoplasmic Reticulum in Saccharomyces cerevisiae ...
Mutations That Affect Vacuole Biogenesis Inhibit Proliferation of the Endoplasmic Reticulum in Saccharomyces cerevisiae -- Koning et al.
The vps16-101 and vps16-102 mutants have abnormal vacuole and karmellae ultrastructure:
vps16-101 and vps16-102 have abnormal vacuole and karmellae ultrastructure at nonpermissive temperature.
www.genetics.org /cgi/content/full/160/4/1335   (6794 words)

  
 Cell Organelles: Vacuole
Vacuoles tend to be large in plant cells and play a role in turgor pressure.
When a plant is well-watered, water collects in cell vacuoles producing rigidity in the plant.
Without sufficient water, pressure in the vacuole is reduced and the plant wilts.
www.cellsalive.com /cells/vacuole.htm   (76 words)

  
 Mutants of Saccharomyces cerevisiae that Block Intervacuole Vesicular Traffic and Vacuole Division and Segregation -- ...
Intervacuole vesicular exchange and the segregation of parental vacuole material into the bud are strikingly impaired in a temperature-sensitive yeast mutant, vac1-1.
In zygotes, vacuoles from a vac1-1 strain are defective as donors, or recipients, of the vesicles of intervacuole vesicular traffic.
These defects are specific for the vacuole in that the segregation of nuclear DNA and of mitochondria into the bud appears normal.
www.pnas.org /cgi/content/short/87/3/1076   (806 words)

  
 Vacuole
The vacuole is a large vesicle which is also used to store nutrients, metabolites, and waste products.
The pressure applied by the vacuole, called turgor, is necessary to maintain the size of the cell.
The vacuole typically is 50% of the volume of the cell, yet it can take up to 95% of the cell!
library.thinkquest.org /C004535/vacuole.html   (112 words)

  
 A truncated form of the Pho80 cyclin redirects the Pho85 kinase to disrupt vacuole inheritance in S. cerevisiae -- ...
A truncated form of the Pho80 cyclin redirects the Pho85 kinase to disrupt vacuole inheritance in S. cerevisiae -- Nicolson et al.
Bryant, N. J., Stevens, T. Vacuole Biogenesis in Saccharomyces cerevisiae: Protein Transport Pathways to the Yeast Vacuole.
Pan, X, Goldfarb, D. YEB3/VAC8 encodes a myristylated armadillo protein of the Saccharomyces cerevisiae vacuolar membrane that functions in vacuole fusion and inheritance.
www.jcb.org /cgi/content/abstract/130/4/835   (497 words)

  
 Identification of a cytoplasm to vacuole targeting determinant in aminopeptidase I -- Oda et al. 132 (6): 999 -- The ...
Identification of a cytoplasm to vacuole targeting determinant in aminopeptidase I -- Oda et al.
Identification of a cytoplasm to vacuole targeting determinant in aminopeptidase I
Silles, E., Mazon, M. J., Gevaert, K., Goethals, M., Vandekerckhove, J., Leber, R., Sandoval, I. Targeting of Aminopeptidase I to the Yeast Vacuole Is Mediated by Ssa1p, a Cytosolic Member of the 70-kDa Stress Protein Family.
www.jcb.org /cgi/content/abstract/132/6/999   (785 words)

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