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Latest Organelles Stories

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...

2011-06-17 13:07:30

Although scientists have been able to sequence the genomes of many organisms, they still lack a context for associating the proteins encoded in genes with specific biological processes. To better understand the genetics underlying plant physiology and ecology"”especially in regard to photosynthesis"”a team of researchers including Carnegie's Arthur Grossman identified a list of proteins encoded in the genomes of plants and green algae, but not in the genomes of organisms that...

2011-06-16 09:42:00

OMAHA, Neb., June 16, 2011 /PRNewswire/ -- Transgenomic, Inc. (OTC/BB: TBIO) today announced the launch of the Nuclear Mitome Test, a genetic test to aid physicians in the diagnosis of mitochondrial disorders. The Nuclear Mitome Test, employs next-generation sequencing technology to identify mutations in more than 400 genes, and represents the most comprehensive genetic test available for mitochondrial disorders. The announcement was made at the 2011 United Mitochondrial Disease Foundation...

2011-06-03 13:23:15

Max Planck scientists decipher important mechanisms of bacterial cell wall synthesis Almost all bacteria owe their structure to an outer cell wall that interacts closely with the supporting MreB protein inside the cell. As scientists at the Max Planck Institute for Biochemistry and at the French INRA now show, MreB molecules assemble into larger units, but not - as previously believed "“ into continuous helical structures. The circular movement of these units along the inside of the...

2011-06-02 23:57:22

Discovery could provide new target for drug development against conditions including heart attack, stroke and Parkinson's disease Scientists from the Florida campus of The Scripps Research Institute have uncovered a potentially important new therapeutic target that could prevent stress-related cell death, a characteristic of neurodegenerative diseases such as Parkinson's, as well as heart attack and stroke. In the study, published recently in the journal ACS Chemical Biology, the scientists...


Word of the Day
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.