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Science News Archive 2006 - Page 113


Page 113 of 178

The molecular post office inside the cell

The signal recognition particle (SRP) complex plays a crucial role in sorting secretory and membrane proteins, determining their final destination within or outside the cell. By understanding its structure, researchers can uncover key events during protein sorting, essential for expressing these proteins correctly.

SourceMax-Planck-Gesellschaft·JournalScience·DateMay 12, 2006

Organizing dumbbells for nanotech devices

Scientists design molecular machines that can switch between functional units and demonstrate reversible switching behavior when exposed to acid and base. The study showcases the potential for organizing molecular machines on surfaces, paving the way for future development of molecular computers.

SourceWiley·JournalAdvanced Materials·DateMay 12, 2006

New treatment for food poisoning

A new treatment using fosfomycin has shown promise in treating Listeria infections, which cause severe food-borne diseases. The drug was ineffective in laboratory tests but proved effective in the body, highlighting the need to revise testing methods.

SourceUniversity of Bristol·JournalNature Medicine·DateMay 11, 2006

Dragonfly migration resembles that of birds, scientists say

A team of Princeton University researchers tracked 14 green darner dragonflies for up to 10 days and found their flight patterns showed similarities to bird migration patterns. The study suggests that the rules for animal migration may have been established in Earth's history, with implications for agriculture and ecological management.

SourcePrinceton University·JournalBiology Letters·DateMay 11, 2006

JCI table of contents, May 11, 2006

Researchers found that the steroid and xenobiotic receptor (SXR) negatively regulates CYP24 expression and subsequent vitamin D breakdown, but can also enhance vitamin D hydroxylation and breakdown by inducing CYP3A4. Additionally, IL-15 administration restored CD4+ T cell production in an animal model of HIV infection, while lithium w...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMay 11, 2006

Coffee, black, decaf and a little llama on the side

Researchers have created a heat-stable antibody that can detect caffeine in various drinks, including coffee, tea, and cola. The test has shown accuracy comparable to sophisticated equipment, with potential applications for consumers who want to avoid caffeine due to health or personal reasons.

SourceWashU Medicine·JournalAnalytical Chemistry·DateMay 11, 2006

Scientists describe new African monkey genus – first in 83 years

A team of international scientists has discovered a new African monkey genus, Rungwecebus kipunji, through collaborative research. The species, found in Tanzania's high-altitude forests, exhibits distinct physical characteristics and is closely related to baboons, highlighting the need for conservation efforts to protect its vulnerable...

SourceField Museum·JournalScience·DateMay 11, 2006

A bone of contention in drug-induced osteomalacia

Researchers found that SXR inhibits VDR-mediated CYP24 activity in mice, contradicting previous studies. In humans, rifampicin treatment increases CYP3A4 expression but has no effect on CYP24 expression, suggesting a complex regulatory mechanism.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMay 11, 2006