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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

A case of mistaken molecular identity

A recent study found that antibodies targeting the Chagas parasite also block rhodopsin, a molecule essential for converting light into electrical impulses. This discovery sheds light on the molecular mechanisms underlying the disease's vision problems. Researchers hope to develop new drugs or vaccines to combat the parasite and improv...

SourceHoward Hughes Medical Institute·JournalThe FASEB Journal·DateFeb 27, 2006

From gene discovery to preventing eye disease in retinitis pigmentosa

Researchers find that moderate light exposure causes complete retinal degeneration within a month, but lower levels cause slower and reversible damage. This study provides new insights into the interaction of genetics and environment in causing eye disease and suggests potential treatments for preventing blindness.

SourceUniversity of Pennsylvania School of Medicine·JournalProceedings of the National Academy of Sciences·DateMar 22, 2005

Surprise mechanism behind light-induced blindness

Researchers discovered that constant light causes visual impairment through a separate mechanism from retinal degeneration. A decline in rhodopsin concentration leads to blindness, and inhibiting its degradation may reduce the severity of visual impairment.

SourceCell Press·JournalCurrent Biology·DateDec 13, 2004

Dinosaur ancestor's vision possibly nocturnal

Researchers recreated a 240-million-year-old protein to study the vision of dinosaur ancestors, finding evidence that they may have had dim-light vision. The discovery offers insights into how biologically important molecules evolved over time and paves the way for further studies on ancient species.

SourceRockefeller University·JournalMolecular Biology and Evolution·DateSep 3, 2002

Mastiffs could aid treatment of retinitis pigmentosa

Researchers have discovered a genetic mutation in English mastiffs that causes retinal dysfunction and degeneration, mirroring human dominant retinitis pigmentosa. The study aims to find treatments and cures for inherited forms of blindness in humans by testing therapies first in dogs.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateApr 29, 2002