Tag: "envelope" at biology news

Understanding why C. difficile causes disease -- it's hungry

... a protein that makes a hole in the organisms cell envelope to let the toxins out. The last two genes are of greatest interest to Sonenshein and his colleague, Bruno Dupuy from the Institut Pasteur. One codes for a protein, known as R, that is necessary for the expression of the first three genes and the oth...

Getting to the core of an emergent public health threat

... of Hogues research is the role of the coronavirus envelope protein (E protein), described in "Role of the Coronavirus E Viroporin Protein Transmembrane Domain in Virus Assembly," Journal of Virology (April 2007). By creating mutants of the E protein in a mouse coronavirus model that infects the liver and ot...

Creation of an international industrial chair in life cycle assessment

...ture. This agreement reflects our will to push the envelope as regards life cycle assessment within our activities. This fits with an approach to sustainable development which takes into account the needs of present and future generations: the underlying theme of all our actions", explains Myriam Truchon, Dir...

Brain works more chaotically than previously thought

...ls are guided by the glutamate to locate axons and envelope them in a layer of myelin," says Dirk Dietrich. As soon as the axons leave the white "cable duct" they enter the brain's grey matter where they encounter their receptor dendrites. Here, the information is passed on at the synapses to the receptor ...

PNAS announces 2006 Cozzarelli Prize recipients

...t ahead," as he encouraged researchers to push the envelope of discovery. In his honor, this year the award is renamed the Cozzarelli Prize. This year's awards will be presented at the PNAS Editorial Board Meeting on April 29, 2007, in Washington, D.C. Papers receiving the Cozzarelli Prize were chosen from...

Newly discovered West Coast arrhythmias cause

...sity. "Winds in both 2005 and 2006 are outside the envelope of what we've seen in the last twenty to forty years. They are the two most anomalous years in the last two decades -- and they are anomalous in opposite directions." Starving Salmon In 2005, relaxed winds delayed upwelling of cold water and nut...

Cholera pathogen reveals how bacteria generate energy to live

...hether these labels appeared inside or outside the envelope of the cell membrane. The results showed that the cofactors important parts of the enzymes machinery are all located on the inner side of the membrane, which corresponds to the "intake" port of the ion pump. The second paper was published in the ...

Microwave oven can sterilize sponges, scrub pads

...cks. Using a dose of Bacillus cereus dried on an envelope as a substitute for mail contaminated by anthrax spores, Bitton said he found he could kill 98 percent of the spores in 10 minutes by microwaving the paper suggesting, he said, one possible course of action for people who fear mail might be contamin...

Microtubule protein interactions visualized en masse

... cell rounds up, chromosomes condense, the nuclear envelope breaks down, and microtubules (proteins that help maintain the cell's shape) become very short and dynamic before assembly of the mitotic spindle (the structure that pulls chromosomes apart). Although it is known that the CDK1 kinase induces this reo...

New clues to how sex evolves

...scent of the way chromosomes attach to the nuclear envelope during meiosis in other organisms. "In most euk...ch; nevertheless, the association with the nuclear envelope seems to serve a similar function, which is to stabilize chromosome interactions during pairing." ...

Researchers make nanosheets that mimic protein formation

...said. S-layer proteins comprise the outermost cell envelope of a wide variety of bacteria and other single-celled, prokaryotic organisms called archaea, and they are able to form 2-d sheets with square, hexagonal, and other packings at surfaces and interfaces, as well as suspended in fluid. The group sought t...

UVA studies potential target for skin cancer treatment

...oteins play a role in the formation of the nuclear envelope of the developing human spermatid. The paper can b...oteins remain restricted to regions of the nuclear envelope that do not touch the acrosome, an organelle involved in fertilization." Researchers at the Univer...

A new player in nuclear import of HIV-1

... can get access to the cell's DNA when the nuclear envelope dissolves during mitosis. But in cells that do not divide, such as the macrophages of the immune system, the virus must somehow insert its "reverse transcription complex" (RTC, which contains the virus's RNA genetic material) into the nucleus; the me...

Researchers discover that sheep need retroviruses for reproduction

...man placenta. The team blocked expression of the envelope of the enJSRVs using morpholino antisense oligonuc...of specific messenger RNA. When production of the envelope protein was blocked in the early placenta, the growth of the placenta was reduced and a certain cell...

NYU biologists identify gene that coordinates two cellular processes

...uring cell division and it is required for nuclear envelope function. The findings appear in the journal Curre...t roles in both chromosome segregation and nuclear envelope function. Part of this undertaking included examining the protein MEL-28, which the gene mel-28 enco...

Architects of the envelope

Every time a cell divides, the protective envelope that surrounds the nucleus is broken down and rebu... in the September 5 issue of Current Biology. The envelope acts as a barrier between the outer cell compartment, called the cytoplasm, and DNA stored in the ce...

Research pinpoints West Nile virus antibody binding site

...ody attaches to a protein called an E protein, for envelope protein, which makes up the virus's outer shell. There are 180 copies of E proteins symmetrically arranged in 60 sets of three, forming a geometric shape called an icosahedron, which is made up of triangular facets. The researchers, however, were s...

JCI table of contents: August 1, 2006

...red HIV-infected CD4+ T cells that express the HIV envelope glycoprotein with uninfected target cells that exp...CXCR4. They found that CXCR4 engagement by the HIV envelope glycoprotein activates the degradation pathway known as autophagy, causing the death of these uninfe...

HIV's cellular kiss of death explains loss of uninfected T cells in AIDS

...red HIV-infected CD4+ T cells that express the HIV envelope glycoprotein with uninfected target cells that exp...CXCR4. They found that CXCR4 engagement by the HIV envelope glycoprotein activates the degradation pathway known as autophagy, causing the death of these uninfe...

Viral genetic differences are possible key to HIV dementia

...h the presence of a particular mutation in the HIV envelope gene. The study appears in the July 2006 issue ...udy participants. They chose to focus on the viral envelope gene, which interacts with receptors on the surfaces of host cells. "That's the gene that's most lik...

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(Date:10/15/2014)... is a non-traditional biophysics textbook and it describes how ... journey of discovery into biological systems and provides an ... It is about how our genes make proteins that ... of cells in an organism. It quantifies the principles ... can be found on both large and small scales. ...
(Date:10/15/2014)... Alt will be awarded the 44th Rosenstiel Award for ... his pioneering research exploring the mechanisms of genomic instability ... cells. Alt is the second alumnus to win the ... Prize in 2003. , Alt is the Charles A. ... Harvard Medical School and an investigator at the Howard ...
(Date:10/14/2014)... N.Y. – Scientists have sequenced the house fly genome ... one might expect from an insect that thrives in ... published Oct. 14 in the journal Genome Biology ... biology and of how flies quickly adapt to resist ... Adult house flies (Musca domestica) carry and transmit more ...
Breaking Biology News(10 mins):New book about life as seen from physics 2Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2House fly genome reveals expanded immune system 2
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