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Last updated on April 23, 2014 at 21:24 EDT

Latest Organelles Stories

2011-09-13 12:18:12

A new technique developed by researchers at RIKEN has clarified the location and dynamics of specific metabolites in a single cell of the alga Chara australis. The findings reveal that these metabolites are regulated and fluctuate under stress conditions, providing insight into previously-unknown functions of the vacuole in cellular processes. Metabolites, the intermediates and products of chemical reactions that sustain all living organisms, play a central role in cellular processes...

2011-09-02 16:48:24

New research from the University of California, Davis, and the University of Colorado at Boulder puts an unexpected twist on how mitochondria, the energy-generating structures within cells, divide. The work, which could have implications for a wide range of diseases and conditions, was published today (Sept. 2) in the journal Science. “It´s a paradigm shift in cell biology,” said Jodi Nunnari, professor and chair of molecular cell biology at UC Davis and a co-author of the...

2011-09-01 16:40:08

Just as we must take out the trash to keep our homes clean and safe, it is essential that our cells have mechanisms for dealing with wastes and worn-out proteins. When these processes are not working properly, unwanted debris builds up in the cell and creates a toxic environment. Now, a new study published by Cell Press on September 1st in the journal Developmental Cell describes a master regulator of the intracellular recycling and waste removal process and suggests an alternative strategy...

2011-08-26 15:36:49

Researchers at IRB Barcelona discover a crucial mechanism controlling the segregation of genetic material from parent to daughter cells. A finely tuned process of degradation tightly regulates CenH3 protein levels to ensure the correct function of the cell division machinery in Drosophila. From bacteria to humans, all forms of life are based on the capacity of one cell to divide into two or more identical daughter cells. In doing so, cells have to produce a copy of their genetic material...

2011-08-24 21:47:27

Trafficking pathway for hundreds of cell proteins reconstructed and tested The delivery system for an important class of proteins in the cell membrane can be fully replicated with a mere three components, according to a new study. Tail-anchored proteins, the molecular machines that make up approximately five percent of the membrane proteins in a cell, are known to have their own special pathway for trafficking to the membrane after construction. New research from the University of...

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2011-08-18 13:48:11

When an egg cell is being formed, the cellular machinery which separates chromosomes is extremely imprecise at fishing them out of the cell's interior, scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, have discovered. The unexpected degree of trial-and-error involved in this process could explain why errors in the number of chromosomes in the egg cell are the leading cause of miscarriages and severe congenital diseases such as trisomies like Down's...

2011-08-16 23:08:53

As part of a joint research effort with the University of Michigan, scientists from the Florida campus of The Scripps Research Institute have for the first time defined the structure of one of the cell's most basic engines, which is required for cell growth, as it assembles from its components. The study reveals a series of redundant mechanisms that assure production of these critical structures while avoiding any missteps that could lead to their destruction or to the production of incorrect...

2011-08-08 06:34:54

Discovery may have implications for many diseases Cells are the building blocks of the human body. They are a focus of scientific study, because when things go wrong at the cellular and molecular level the consequences for human health are often significant. A new finding based on multiple collaborations between UNC and Duke scientists over several years points to new avenues for investigation of cell metabolism that may provide insights into diseases ranging from neurodegenerative disorders...

2011-08-01 14:35:14

The research group of Professor Pekka Lappalainen at the Institute of Biotechnology, University of Helsinki, has identified a previously unknown mechanism which modifies the structure of plasma membranes in intestinal epithelial cells. Unlike other proteins with a similar function, the new protein "“ named 'Pinkbar' by the researchers - creates planar membrane sheets. Further research investigates the potential connection of this protein with various intestinal disorders. The study was...

2011-06-20 13:06:39

Cell's power generator depends on long-sought protein Mitochondria, those battery-pack organelles that fuel the energy of almost every living cell, have an insatiable appetite for calcium. Whether in a dish or a living organism, the mitochondria of most organisms eagerly absorb this chemical compound. Because calcium levels link to many essential biological processes"”not to mention conditions such as neurological disease and diabetes"”scientists have been working for half a...