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Latest Helices Stories

2009-04-08 06:00:00

HOUSTON, April 8 /PRNewswire/ -- LaserGen, Inc., a DNA sequencing technology company, announced a definitive agreement in which SeqWright Inc. will make an equity investment in the company. Prompting its decision was LaserGen's recently revealed plans to commercialize its novel reversible terminator chemistry, Lightning Terminators(TM), for next-generation sequencing applications. The company anticipates bringing its chemistry as reagent kits to the market as early as 2010, by forming...

2009-04-02 14:26:44

Chemists at New York University and Harvard University have created a bipedal, autonomous DNA "walker" that can mimic a cell's transportation system. The device, which marks a step toward more complex synthetic molecular motor systems, is described in the most recent issue of the journal Science. For a video demonstration of the walker, go to http://www.nyu.edu/public.affairs/videos/qtime/biped_movie.mov.Two fundamental components of life's building blocks are DNA, which encodes instructions...

2009-03-24 15:36:08

A U.S. scientist and his colleagues have described the design of a new type of DNA with 12 chemical letters instead of the usual four. Researchers, led by Steven Benner of the Foundation for Applied Molecular Evolution in Gainesville, Fla., said their artificial genetic system already is helping to usher in the era of personalized medicine. The scientists said their research might also shed light on how life arose on Earth, by producing a self-sustaining molecule capable of Darwinian...

2009-03-24 09:13:09

No doubt proteins are complex. Most are "large" and full of interdependent branches, pockets and bends in their final folded structure. This complexity frustrates biochemists and protein engineers seeking to understand protein structure and function in order to reproduce or create new uses for these natural molecules to fight diseases or for use in industry.From-scratch design of an oxygen transport protein buries hemes in a bundle of protein columns (alpha helices) linked by loops into a...

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2009-02-18 06:50:00

US scientists report that the smallest amount of DNA found at a crime scene could help reveal the face of the criminal. The new process called "Ëœforensic molecular photofitting' goes far beyond doing an identity-proving genetic fingerprint. Dr Mark Shriver from Pennsylvania State University said the process would allow forensic experts to reconstruct facial features and skin with the help of DNA. It maps the genes that are linked to skin pigmentation and facial structure....

2009-02-16 14:59:17

U.S. and Chinese scientists say they've created a two-armed nanorobot that can manipulate molecules within a device built from DNA. Researchers at New York University and China's Nanjing University said the programmable unit allows researchers to capture and maneuver patterns on a scale that is unprecedented. New York University Professor Nadrian Seeman, one of the study's co-authors, said the two-armed nanorobotic device enables the creation of new DNA structures, thereby potentially serving...

2009-02-05 10:14:44

MIT researchers who study the structure of protein-based materials with the aim of learning the key to their lightweight and robust strength have discovered that the particular arrangement of proteins that produces the sturdiest product is not the arrangement with the most built-in redundancy or the most complicated pattern. Instead, the optimal arrangement of proteins in the rope-like structures they studied is a repeated pattern of two stacks of four bundled alpha-helical proteins.This...

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2008-12-26 09:35:00

Much like Steve Jobs of Apple Computers and the creators of the Google search engine, hobbyists are now working at home with the basic building blocks of life itself.People are using the unlimited knowledge of the Internet, and homemade lab equipment, and are trying to create new life forms through genetic engineering, a field largely dominated by Ph.D.'s tolling in university and corporate laboratories.Meredith L. Patterson, a 31-year-old computer programmer in San Francisco, is using her...

2008-11-18 13:25:54

The oldest known nuclear family was killed in a violent struggle, an analysis of the 4,600-year-old remains buried in Germany indicate. In fact, the oldest genetically identifiable family were definitely murdered, there are big holes in their heads, fingers and wrists are broken, Alistair Pike from Bristol University told the BBC. The researchers, whose report was published in the PNAS scientific journal, said comparisons of DNA extracted from bones found in one grave confirmed it entombed a...

2008-11-06 15:00:07

U.S. scientists say they have discovered social interactions can alter the brain's genetic expression far more significantly than has been thought. University of Illinois researchers said our DNA determines a lot about who we are and how we play with others. "But recent studies of social animals -- birds and bees, among others -- show the interaction between genes and behavior is more of a two-way street than most of us realize," the researchers said. Professors Gene Robinson and David...


Latest Helices Reference Libraries

Brief Introduction To DNA Probes
2014-01-12 00:00:00

DNA probes help scientists to detect a specific gene in a long DNA sequence. According to Dr. Michael A. Pfaller, DNA probes are “single-stranded pieces of nucleic acid, labeled with a specific tracer (isotope, enzyme, or chromophore), that will hydrogen bond (hybridize) with complementary single-stranded pieces of DNA (or RNA) under the appropriate conditions of pH, temperature, and iconic strength.” The Foundation for Genomics and Population Health website has a helpful video about...

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Word of the Day
cenobite
  • One of a religious order living in a convent or in community; a monk: opposed to anchoret or hermit (one who lives in solitude).
  • A social bee.
This word comes from the Latin 'coenobium,' convent, which comes from the Greek 'koinobios,' living in community.
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