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General Science news 2345

First glimpse of a key DNA repair protein at work

October 03, 2008 | User rating: 5 / 5 after 11 vote(s) | No comments yet

Repairing breaks in the two strands of the DNA double helix is critical for avoiding cancer. In humans and other organisms, a molecular machine called the MRN complex is responsible for finding and signaling ...


Atomic-resolution views suggest function of enzyme that regulates light-detecting signals in eye

October 07, 2008 | User rating: 5 / 5 after 6 vote(s) | No comments yet

An atomic-resolution view of an enzyme found only in the eye has given researchers at the University of Washington (UW) clues about how this enzyme, essential to vision, is activated. The enzyme, phosphodiesterase ...


Can genetic information be controlled by light?

October 10, 2008 | User rating: 5 / 5 after 12 vote(s) | No comments yet

Researchers at Kiel University have succeeded in showing that DNA strands differ in their light sensitivity depending on their base sequences. Their results are reported by Nina Schwalb and colleagues in the current issue ...


Landmark study unlocks stem cell, DNA secrets to speed therapies

October 10, 2008 | User rating: 5 / 5 after 19 vote(s) | No comments yet

In a groundbreaking study led by an eminent molecular biologist at Florida State University, researchers have discovered that as embryonic stem cells turn into different cell types, there are dramatic corresponding ...


NZ considers protecting great white sharks

March 13, 2006 | User rating: 5 / 5 after 31 vote(s) | No comments yet

The New Zealand government is reportedly considering joining other nations, including Australia and the United States, in protecting the great white shark.


Research could put penicillin back in battle against antibiotic resistant bugs that kill millions

March 12, 2008 | User rating: 5 / 5 after 23 vote(s) | User comments: 1

Research led by the University of Warwick has uncovered exactly how the bacterium Streptococcus pneumoniae has become resistant to the antibiotic penicillin. The same research could also open up MRSA to attack ...


Benchmark cyanobacterium sequenced could be cheap renewable energy source

September 17, 2008 | User rating: 4.9 / 5 after 19 vote(s) | No comments yet

(PhysOrg.com) -- A team of researchers headed by biologists at Washington University in St. Louis has sequenced the genome of a unique bacterium that manages two disparate operations — photosynthesis and nitrogen ...


Scientists produce functioning neurons from human embryonic stem cells

August 09, 2007 | User rating: 4.9 / 5 after 18 vote(s) | No comments yet

Scientists with the Institute of Stem Cell Biology and Medicine at UCLA were able to produce from human embryonic stem cells a highly pure, large quantity of functioning neurons that will allow them to create models of and ...


Multi-lab collaboration yields first detailed map of nuclear pore complex

December 03, 2007 | User rating: 4.9 / 5 after 18 vote(s) | No comments yet

A cell’s membrane-bound nucleus contains precious contents — its DNA — so it must be very careful about what enters and leaves this important space. To do this, it uses hundreds to thousands of nuclear pores ...


Sewing DNA thread with lasers, hooks and microbobbins

July 10, 2008 | User rating: 4.9 / 5 after 18 vote(s) | No comments yet

(PhysOrg.com) -- Japanese scientists have made a micro-sized sewing machine to sew long threads of DNA into shape. The work published in the Royal Society of Chemistry journal Lab on a Chip demonstrates ...


More Than 470 Physicists Sign Petition To Oppose U.S. Policy On Nuclear Attack

October 25, 2005 | User rating: 4.9 / 5 after 17 vote(s) | No comments yet

More than 470 physicists, including seven Nobel laureates, have signed a petition to oppose a new U.S. Defense Department proposal that allows the United States to use nuclear weapons against non-nuclear states.
The petition ...


Researchers investigate mass bat deaths

February 21, 2008 | User rating: 4.9 / 5 after 17 vote(s) | No comments yet

First it was bees that were mysteriously dying. Now it's bats.


Researchers unveil near-complete protein catalog for mitochondria

July 10, 2008 | User rating: 4.9 / 5 after 17 vote(s) | User comments: 1

Imagine trying to figure out how your car's power train works from just a few of its myriad components: It would be nearly impossible. Scientists have long faced a similar challenge in understanding cells' tiny powerhouses ...


Scientists turn human skin cells into insulin-producing cells

September 17, 2008 | User rating: 4.9 / 5 after 33 vote(s) | No comments yet

(PhysOrg.com) -- Researchers at the University of North Carolina at Chapel Hill School of Medicine have transformed cells from human skin into cells that produce insulin, the hormone used to treat diabetes.


Research team uses tiny wasp to wipe out major agricultural pest in Tahiti

March 14, 2008 | User rating: 4.9 / 5 after 16 vote(s) | User comments: 3

A research team led by Mark Hoddle, a biological control specialist at UC Riverside, has nearly eradicated the glassy-winged sharpshooter, a major agricultural pest, from the island of Tahiti and several other ...


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