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Worm links cancer risk to ageing

Researchers have discovered a connection between a protein that prevents cancer in humans and lifespan in nematode worms, suggesting that this protein may determine how long we live. The 'checkpoint proteins' also appear to play a role in cell division and could be used to develop new strategies for treating neurodegenerative diseases.

SourceUniversity of Manchester·JournalScience·DateJun 1, 2006

Mapping dynamic Polycomb group proteins during Drosophila development

Researchers mapped dynamic Polycomb group protein PC and PH across various developmental stages in Drosophila. The study reveals the proteins' diverse binding locations, implying different gene silencing mechanisms. Further analysis is needed to understand their role in development and conservation across species.

SourcePLOS·JournalPLOS Biology·DateApr 19, 2006

Equalizing the sexes

New research reveals the Drosophila homolog of the mammalian UNR protein as a co-factor required for SXL-mediated repression of msl-2 translation. This mechanism prevents dosage compensation in female cells, highlighting an essential role for the UNR protein in maintaining sex-specific regulation.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateJan 31, 2006

The impact of smoking and genes on rheumatoid arthritis

Researchers found a strong link between smoking, HLA-DR SE genes, and anticitrulline antibodies in early rheumatoid arthritis patients. Smoking significantly raises RA risk for individuals testing positive for these antibodies, regardless of SE gene status.

SourceWiley·JournalArthritis & Rheumatism·DateJan 3, 2006

Study provides insight into cellular defenses against genetic mutation

A recent study has uncovered a natural quality control mechanism in cells that identifies and eliminates faulty messenger RNAs (mRNAs) containing premature stop codons, known as nonsense mutations. The mRNA-binding protein CBP80 plays a critical role in this process, allowing for the development of drug-based gene therapies to combat d...

SourceUniversity of Rochester Medical Center·JournalNature Structural & Molecular Biology·DateOct 25, 2005

Cornell finds natural selection in humans

A study published in Nature analyzed 11,624 genes and found that around 9% have evolved too rapidly to be explained by chance. The researchers suggest that positive Darwinian natural selection is responsible for the increased rate of evolution, particularly in genes involved in immune function and sensory perception.

SourceCornell University·JournalNature·DateOct 21, 2005

Rett gene regulates alternative splicing

Researchers found that a protein called Y box-binding protein 1 binds to the methyl-CpG binding protein 2 (MeCP2) gene, leading to changes in alternative RNA splicing. This process can result in diverse sets of RNA and proteins being produced from the same gene.

SourceBaylor College of Medicine·JournalProceedings of the National Academy of Sciences·DateOct 17, 2005

UCSD discovery may provide novel method to generate medically useful proteins

A team of UCSD biochemists has discovered a mechanism for generating 10 trillion varieties of a single protein, providing a new tool for developing novel drugs. This finding, published in Nature Structural and Molecular Biology, uses the genetic mechanism used by a virus that infects bacteria to create a kaleidoscope of variants.

SourceUniversity of California - San Diego·JournalNature Structural & Molecular Biology·DateSep 18, 2005

Micro RNAs play role in egg making

Researchers have discovered that microRNAs are involved in the process of oogenesis, a complex regulatory mechanism controlling protein abundance. The findings suggest that miRNA dysfunction may contribute to certain forms of infertility.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateAug 8, 2005

A 'dimmer switch' for genes

Researchers found that the unstructured regions of protein Ets-1 play a crucial role in controlling gene expression, acting like a dimmer switch rather than an on-off switch. The study reveals that phosphorylation affects protein activity by decreasing internal motion and altering gene binding.

SourceUniversity of Utah Health·JournalScience·DateJun 30, 2005