Whole genome DNA sequence analysis, genome wide gene expression and complex organismal phenotypes in Drosophila mutation accumulation lines provide a robust estimate of the spontaneous mutation rate and mutational effects.
Franziska Bleichert, Maxim Balasov ... James M Berger
Electron microscopy uncovers the structure of the origin recognition complex (ORC) in metazoans, and reveals how mutations in the ORC6 subunit lead to Meier-Gorlin syndrome in humans.
Human cell lines replicate and proliferate without ORC1 or ORC2, two subunits of the replication initiator protein complex ORC, which has till now been considered essential for DNA replication.
Shalini Gupta, Larry J Friedman ... Stephen P Bell
A single origin–recognition complex (ORC) directs loading of a pair of head-to-head Mcm2-7 replicative DNA helicases by forming a protein tether to the first helicase, releasing from its initial DNA-binding site, and rebinding the origin DNA in the opposite orientation.
Greed personality trait is associated with behavioral loss aversion via the mediation of the neural loss aversion signal in the medial orbitofrontal cortex.
Wind and ocean wave conditions experienced by albatrosses were estimated using an animal-borne recorder and revealed that take-off was easier under higher wave conditions.
Fengwei Zheng, Roxana Georgescu ... Michael E O'Donnell
Cryo-EM shows a 5’ DNA site on the RFC clamp loader, in addition to the 3’ site, and biochemical study shows the 5’ site facilitates PCNA loading onto gaps, consistent with genetics indicating the 5’ DNA site facilitates gap repair.
François Blanquart, Mary Kate Grabowski ... Christophe Fraser
Analysis of epidemiological data reveals that viral loads in newly HIV-1 infected individuals in Uganda have declined for two decades, and evolutionary modelling shows that attenuation of the virus explains this decline.
The fruit fly estimates visual motion by incorporating ON-OFF asymmetric processing that only improves performance when stimuli have light-dark asymmetries matched to natural scenes.
Apparent age-related differences in learning are best accounted for by rapid decay of information in working memory, which is associated with levels of prefrontal glutamate.