Category Archives: biology

Drosophila CG6539 is orthologue of vertebrate gemin3

Mutations in the survival motor neuron (SMN1) gene cause spinal muscular atrophy (SMA), an autosomal recessive disorder characterised by degeneration of spinal cord motor neurons leading to progressive muscular weakness. SMN1 encodes an RNA-binding protein, SMN, which is complexed with … Continue reading

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Filed under biochemistry, biological sciences, biology, cell biology, deletion, drosophila, helicase, lethality, life sciences, science

gene cluster hypothesis

Gustavo Barja discussed the gene cluster hypothesis of ageing and longevity on the journal Biogerontology. Barja G. The gene cluster hypothesis of aging and longevity. Biogerontology. 2008 Feb;9(1):57-66. Epub 2007 Oct 31. “… the life extension effect of single gene … Continue reading

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Filed under ageing, biology

human exonuclease 1 and BLM helicase

In a recent paper by Amitabh Nimonkar and colleagues, it was established that human BLM helicase, a member of the RecQ family, stimulates human exonuclease 1 (hExo1), a 5′ – 3′ double-stranded DNA exonuclease … “Stimulation of DNA resection by … Continue reading

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Filed under biochemistry, biology, DNA, DNA repair, double strand break, exonuclease, genetics, helicase, homologous recombination, molecular biology

Sarah Palin and the fruitfly

I know this is passe, but just for the record … on her criticism about unyielding pet projects, one example that popped into her head — fruitfly research … “I kid you not” … have a look on youtube … … Continue reading

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Filed under ageing, biology, politics

WRN mini-review

In a recent issue of DNA Repair [7 (2008) 1776–1786], Julia Sidorova reviews the role of WRN in preserving DNA integrity during replication and propose that WRN can function in coordinating replication fork progression with replication stress-induced fork remodeling. She … Continue reading

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Filed under ageing, aging, biological sciences, biology, DNA, DNA repair, double strand break, exonuclease, genetics, helicase, homologous recombination, lifespan, longevity, molecular biology, nucleus, science, Werner Syndrome, Werners Syndrome, WRN

rDNA and recombination

In a mini-review by Ellen Tsang and Anthony Carr, recombination is highly regulated in the rDNA. Repetitive sequences such as rDNA provide good substrates for homologous recombination, particualrly if replication forks collapse here. Several studies have shown that replication fork … Continue reading

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Filed under ageing, aging, biology, DNA, DNA repair, double strand break, gene, genetics, homologous recombination, molecular biology, recombination, replication, s. cerevisiae, saccharomyces cerevisiae, science, sirtuin, yeast

mitochondrial DNA subunits

Rajindar Sohal and colleagues recently made a study comparing the expression of mitochondrial DNA encoded subunits of cytochrome c oxidase (CcO) in Drosophila melanogaster. They compared mitochondrial proteins from 15-, 25-, 35-, 47- and 60-day-old flies. Subunits I, II and … Continue reading

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Filed under ageing, aging, biology, drosophila, genetics, mitochondrial DNA, molecular biology