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Latest Francis Crick Stories

2008-07-23 03:00:00

By Dahm, Ralf Few remember the man who discovered the "molecule of life" three- quarters of a century before Watson and Crick revealed its structure On February 26, 1869, in the old university town of Tubingen in southwest Germany, the young Swiss doctor Friedrich Miescher, who had settled there only a few months earlier, completed a letter to his uncle in which he described a momentous discovery. He had found a substance that he was certain resided in the cell nucleus and which differed in...

2008-06-17 00:00:09

Pioneering U.S. molecular biologist Gunther Stent, whose research validated the 1953 discovery of the structure of DNA, has died. The New York Times reported Stent died Thursday near his Haverford, Pa., at the age of 84. James D. Watson, who along with Francis H. C. Crick discovered the double-helix structure of DNA, said Stent wrote the textbook that became the most exciting tool for the study of molecular genetics following the finding of the double helix. The book, Molecular Biology...

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2008-01-07 06:10:00

For the first time, scientists have captured detailed images of life's essence. The dazzling pictures reveal a key step in the process of cell division, which all organisms must undergo to survive. The moment occurs deep within a cell, as two proteins work in concert to unzip a strand of DNA to create two new cells. But until now, scientists seeking to directly observe this essential process only could view fuzzy images taken by an electron microscope. A scientist at the University of...

2005-10-03 14:59:57

PITTSBURGH--For the first time, a team of investigators at Carnegie Mellon University has shown that the binding of metal ions can mediate the formation of peptide nucleic acid (PNA) duplexes from single strands of PNA that are only partly complementary. This result opens new opportunities to create functional, three-dimensional nanosize structures such as molecular-scale electronic circuits, which could reduce by thousands of times the size of today's common electronic devices. The research...

2005-09-29 19:36:04

Since the discovery of the structure of DNA by James Watson and Francis Crick in 1953, the paradigm for DNA replication has stated that the DNA itself codes for the appropriate pairings for replication. In other words, if a guanine base is on the original strand of DNA then its partner, a cytosine base, will pair to it on the replicated strand. In a study published in this week's issue of Science, researchers from Mount Sinai School of Medicine report on the first instance in which a protein,...

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2005-08-29 13:28:42

Astrobiology Magazine -- Chemists at Ohio State University have gained new insight into how sunlight affects DNA. And what they found overturns ideas about genetic mutation that originated decades ago. In the current issue of the journal Nature, Bern Kohler and his colleagues report that DNA dissipates the energy from ultraviolet (UV) radiation in a kind of energy wave that travels up the edge of the DNA molecule, as if the energy were climbing one side of the helical DNA "ladder." The...

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2005-08-24 16:55:00

COLUMBUS , Ohio -- Chemists at Ohio State University have gained new insight into how sunlight affects DNA. And what they found overturns ideas about genetic mutation that originated decades ago. In the current issue of the journal Nature, Bern Kohler and his colleagues report that DNA dissipates the energy from ultraviolet (UV) radiation in a kind of energy wave that travels up the edge of the DNA molecule, as if the energy were climbing one side of the helical DNA "ladder." The finding...

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2005-08-05 05:25:00

A new theory that explains why the language of our genes is more complex than it needs to be also suggests that the primordial soup where life began on earth was hot and not cold, as many scientists believe. In a paper published in the Journal of Molecular Evolution this week, researchers from the University of Bath describe a new theory which they believe could solve a puzzle that has baffled scientists since they first deciphered the language of DNA almost 40 years ago. In 1968, Marshall...

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2005-08-03 14:50:00

A new theory that explains why the language of our genes is more complex than it needs to be also suggests that the primordial soup where life began on earth was hot and not cold, as many scientists believe. In a paper published in the Journal of Molecular Evolution this week, researchers from the University of Bath describe a new theory which they believe could solve a puzzle that has baffled scientists since they first deciphered the language of DNA almost 40 years ago. In 1968, Marshall...


Word of the Day
pungle
  • To take pains; labor assiduously with little progress.
This word comes from the Spanish 'pongale,' put it.
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