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Proofreading and error-correction in nanomaterials inspired by nature
Mimicking nature, a procedure developed by researchers at the University of Illinois at Urbana-Champaign can find and correct defects in self-assembled nanomaterials. view more (2005-10-19)
Catcher in the Rye
The development of sensors that can selectively fish a specific type of molecule out of a mixture is among the highest goals of many chemists. Vladimir M. Mirsky and his coworkers at the University of Regensburg have now come close to meeting this objective - with a clever coating for electrodes that recognizes molecules by their shape. To... view more... (1999-04-13)
Copy number variation may stem from replication misstep
Genome rearrangements, resulting in variations in the numbers of copies of genes, occur when the cellular process that copies DNA during cell division stalls and then switches to a different genetic "template," said researchers at Baylor College of Medicine in Houston in a report that appears today in the journal Cell. view more (2007-12-28)
DNA size a crucial factor in genetic mutations, study finds
Researchers at Stanford University have created a larger-than-normal DNA molecule that is copied almost as efficiently as natural DNA. view more (2005-10-27)
Novel mechanism for DNA replication discovered
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. view more (2005-09-30)
Nano-sediment highways in catalyst
Dutch chemists have visualised how the porous structure of a zeolite catalyst depends on the production method. Zeolite made with carbon fibres as a template, has particles with straight canals that act as highways for the oil components which must be converted into benzene components. Zeolite is normally given a steam treatment to improve its... view more... (2003-03-21)
DNA template could explain evolutionary shifts
Rearrangements of all sizes in genomes, genes and exons can result from a glitch in DNA copying that occurs when the process stalls at a critical point and then shifts to a different genetic template, duplicating and even triplicating genes or just shuffling or deleting part of the code within them, said researchers from Baylor College of Medicine... view more... (2009-06-22)
Protein splicing upsets the DNA colinearity paradigm
Understanding medical research problems often relies on the direct, linear relationship between the sequence of a protein and the DNA encoding that protein. view more (2006-09-08)
Model for the assembly of advanced, single-molecule-based electronic components developed at Pitt
Researchers based at the University of Pittsburgh have created the best method so far of assembling wire-like structures only a single molecule wide, a significant step in science's increasing attempts to reduce the circuitry size of electronic devices to the single molecule scale and provide smaller, faster, and more energy efficient electronics. view more (2007-09-27)
U-M researchers dispute widely held ideas about stem cells
How do adult stem cells protect themselves from accumulating genetic mutations that can lead to cancer? view more (2007-08-30)
MIT reports new twist in microRNA biology
MIT scientists have found a new way that DNA can carry out its work that is about as surprising as discovering that a mold used to cast a metal tool can also serve as a tool itself, with two complementary shapes each showing distinct functional roles. view more (2008-01-14)
Human DNA repair process recorded in action
A key phase in the repair process of damaged human DNA has been observed and visually recorded by a team of researchers at the University of California, Davis. The recordings provide new information about the role played by a protein known as Rad51, which is linked to breast cancer, in this complex and critical process. view more (2009-01-29)
Simple membranes could have allowed nutrients to pass into primitive cells
When the first cells developed, how could they bring molecules from the environment into their living interior without the specialized structures found on the modern cell membrane? view more (2008-06-05)
New look at DNA hints at origin of ultraviolet damage
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. view more (2005-08-25)
Scripps research team creates simple chemical system that mimics DNA
A team of Scripps Research scientists has created a new analog to DNA that assembles and disassembles itself without the need for enzymes. view more (2009-06-12)
How RNA polymerase II gets the go-ahead for gene transcription
All cells perform certain basic functions. Each must selectively transcribe parts of the DNA that makes up its genome into RNAs that specify the structure of proteins. view more (2009-10-12)
Penn researchers determine structure of smallpox virus protein bound to DNA
Researchers at the University of Pennsylvania School of Medicine have determined the structure of an important smallpox virus enzyme and how it binds to DNA. view more (2006-08-07)
Smart thin film membranes adopt properties of guest molecules
Virginia Tech researchers announced last year that they had created a nanostructured membrane that incorporates DNA base pairs in order to impart molecular recognition and binding ability to the synthetic material. view more (2007-03-29)
UCLA researchers unravel a mystery about DNA
UCLA researchers in collaboration with researchers at Rutgers University have solved longstanding mysteries surrounding DNA transcription, the first step in carrying out instructions contained in our genes. view more (2006-11-17)
Caltech and IBM scientists use self-assembled DNA scaffolding to build tiny circuit boards
Scientists at the California Institute of Technology (Caltech) and IBM's Almaden Research Center have developed a new technique to orient and position self-assembled DNA shapes and patterns-or "DNA origami"-on surfaces that are compatible with today's semiconductor manufacturing equipment. view more (2009-08-18)
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