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Search results for “Biophysics”

1,000+ results for "Biophysics"

Researchers develop curious snapshot of powerful retinal pigment and its partners

A team of researchers has discovered that arrestin molecules bind to two rhodopsin molecules in bright light, but one in low light, challenging the long-held assumption of a single binding interaction. This finding has implications for understanding other senses and physiological functions controlled by G-protein coupled receptors.

SourceAmerican Society for Biochemistry and Molecular Biology·JournalJournal of Biological Chemistry·DateFeb 28, 2011

Atomic model of tropomyosin bound to actin

The study provides the first detailed atomic model of tropomyosin bound to actin, significantly advancing our understanding of this key cellular protein. The researchers found that the interaction between tropomyosin and actin is weak enough that it can be readily perturbed by regulatory proteins, acting as a molecular switch.

SourceCell Press·JournalBiophysical Journal·DateFeb 15, 2011

Turning bacteria against themselves

Scientists at Washington University School of Medicine have identified a protective mechanism in Streptococcus pyogenes that could be exploited to create new antibiotics. The discovery reveals how the antitoxin blocks the toxin's activity, sparing the bacteria from self-destruction.

SourceWashU Medicine·JournalStructure·DateFeb 8, 2011

DNA caught rock 'n rollin'

Researchers at University of Michigan and University of California, Irvine discover DNA's building blocks 'rock and roll,' forming alternative structures with Hoogsteen base pairs. These fleeting states contain new layers of information stored in the genetic code, shedding light on critical interactions between DNA and proteins.

SourceUniversity of Michigan·JournalNature·DateJan 28, 2011

New impulses for surface research

Ralph G. Nuzzo, an American chemist, has been awarded the Research Award of the Alexander von Humboldt Foundation for his pioneering work on thiol-based SAMs. He will spend several months researching at KIT and Bielefeld University to advance Interfacial Systems Chemistry.

A new read on DNA sequencing

Biophysicist Stuart Lindsay's new technique uses recognition molecules to grasp each base in turn, generating a distinct electronic signal that identifies each base. This allows for the reading of individual bases without interference from neighboring bases, including recognition of epigenetic modifications.

SourceArizona State University·JournalNature Nanotechnology·DateNov 14, 2010