News tagged with nuclear membrane
Chromosomes dance and pair up on the nuclear membrane (w/ Video)
Nov 13, 2009 |
4.7 / 5 (3) |
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(PhysOrg.com) -- Meiosis - the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell - is a major crossroads in all organisms reproducing sexually. Yet, how the ...
Come on in: Nuclear barrier less restrictive than expected in new cells
Oct 06, 2009 |
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When it comes to the two basic types of cells, prokaryotes and eukaryotes, compartmentalization is everything. Prokaryotes are evolutionarily ancient cells that only have a membrane surrounding their outer boundary, while ...
New research supports model for nuclear pore complex
Aug 18, 2009 |
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(PhysOrg.com) -- To protect their DNA, cells in higher organisms are very choosy about what they allow in and out of their nuclei, where the genes reside. Guarding access is the job of transport machines called nuclear pore ...
Molecular bridge serves as a tether for a cell's nucleus
Biology /
Aug 08, 2008 |
4.8 / 5 (14) |
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(PhysOrg.com) -- A cell's nucleus - home of it its most precious contents — is a delicate envelope that, without support, is barely able to withstand the forces that keep it in place. Now, researchers have ...
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Lamin A/C deficiency is 'unnerving'
Biology /
Jan 05, 2009 |
3 / 5 (1) |
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Mutations in the nuclear intermediate filament lamin A/C (LMNA) gene are associated with Emery-Dreifuss muscular dystrophy, but cause the disease by unknown mechanisms. Méjat et al. show that one mechanism ...
Researchers construct a device that mimics one of nature's key transport machines
Biology /
Jan 06, 2009 |
4.7 / 5 (7) |
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(PhysOrg.com) -- To help protect its genes, a cell is highly selective about what it allows to move in and out of its nucleus. Yet that choosiness is regulated by just a thin barrier, perforated with tiny ...
Location matters, even for genes
Feb 13, 2008 |
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Moving an active gene from the interior of the nucleus to its periphery can inactivate that gene report scientists from the University of Chicago Medical Center in an article to be published early online Feb.13, 2008, in ...
Molecular machine turns packaged messenger RNA into a linear transcript
Biology /
Feb 11, 2009 |
5 / 5 (1) |
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For RNA, the gateway to a productive life outside the nucleus is the nuclear pore complex, an amalgamation of 30 kinds of proteins that regulates all traffic passing through the nuclear membrane. New research from Rockefeller ...
A flying carpet might take us to Pluto
Apr 26, 2006 |
3.2 / 5 (12) |
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A U.S. scientist says a giant solar panel unfurled in space like a carpet might one day make space flights possible without using nuclear propulsion.
Research identifies 3-D structure of key nuclear pore building block
Jun 07, 2009 |
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The genome of complex organisms is stashed away inside each cell's nucleus, a little like a sovereign shielded from the threatening world outside. The genome cannot govern from its protective chamber, however, without knowing ...
Groundbreaking discovery may lead to stronger antibiotics
Biology /
Oct 01, 2008 |
4.4 / 5 (16) |
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The last decade has seen a dramatic decline in the effectiveness of antibiotics, resulting in a mounting public health crisis across the world. A new breakthrough by University of Virginia researchers provides physicians ...
Crystal structure enables tailoring of pharmaceuticals against asthma
Jul 16, 2007 |
3 / 5 (1) |
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Researchers at Karolinska Institutet in Sweden have managed to elucidate the crystal structure of a human membrane protein – LTC4 synthase – which has a major influence on the development of asthma. LTC4 synthase is extremely ...
Structural study backs new model for the nuclear pore complex
Biology /
Dec 24, 2008 |
4.5 / 5 (2) |
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(PhysOrg.com) -- In higher organisms, the genetic material is confined and protected in the cell nucleus. In order for a healthy cell to function, the DNA must send manufacturing orders through the double ...
Research suggests core nuclear pore elements shared by all eukaryotes
Jul 13, 2009 |
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(PhysOrg.com) -- For perhaps 1.8 billion years after life first emerged on Earth, a sort of evolutionary writer’s block stalled the development of organisms more complicated than single cells. Then, a burst of experimental ...
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