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1,000+ results for "Complex System"

Brown scientists map structure of DNA-doctoring protein complex

Researchers at Brown University have solved the structure of a DNA-protein complex that aids in site-specific recombination, a process that allows mobile DNA to cut into chromosomes. The discovery provides new insights into how this process shapes species over time and its role in spreading antibiotic resistance and certain diseases.

SourceBrown University·JournalMolecular Cell·DateDec 6, 2006

Mayo clinic discovers new type of sleep apnea

Researchers at Mayo Clinic have identified a new type of sleep apnea called complex sleep apnea, which is a combination of obstructive and central sleep apneas. Complex sleep apnea patients often appear to have obstructive sleep apnea but do not fully respond to CPAP machines.

SourceMayo Clinic·JournalSLEEP·DateSep 1, 2006

A protein complex that untangles DNA

Researchers have discovered a protein complex called Smc5/6 that plays a crucial role in repairing damaged DNA and untangling chromosomes before cell division. The complex is involved in two distinct pathways, one for repair and the other for untangling, and its function has significant implications for understanding genetic stability.

SourceKarolinska Institutet·JournalMolecular Cell·DateJul 15, 2006

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

Researchers evolve a complex genetic trait in the laboratory

Duke University biologists evolved a complex polyphenic trait in tobacco hornworms by applying temperature shocks to create two distinct strains with different color responses. The researchers discovered that the level of juvenile hormone regulated the color change, and their experiments demonstrated genetic accommodation.

SourceDuke University·JournalScience·DateFeb 2, 2006

Mitochondrial biology gets a new chaperone

A study has identified a new molecular chaperone involved in assembling the enzyme complex I of mitochondria. The research found that B17.2L is a key protein required for this process and that it is mutated in patients with progressive encephalopathy.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 3, 2005

Catching a sneak

Researchers at the Weizmann Institute of Science have determined the structure of a protein complex on retroviruses that enables them to infect cells. The complex undergoes a radical change in shape as it attaches to cells, and its arrangement is unlike other known viral envelope protein structures.

SourceAmerican Committee for the Weizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateApr 13, 2005

Lessons learned from complex emergencies

The Lancet publishes a series of articles on public health in complex emergencies, highlighting progress made in responding to health consequences of such events. Despite improvements, renewed focus is required on major causes of death in conflict-affected societies, including acute respiratory infections and malnutrition.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 11, 2004

Inflammation's trigger finger

Researchers at the Salk Institute have discovered a critical component of the complex that enables NF-kB to trigger inflammatory responses. The study identifies ELKS protein as essential for NF-kB's function, opening new avenues for treating autoimmune diseases like lupus and arthritis.

SourceSalk Institute·JournalScience·DateJul 19, 2004