Transgenic mice with Rett-causing mutations in MeCP2 reveal that a basic cluster in the C-terminus of the protein binds DNA and that both the methyl-CpG binding domain and the transcriptional repression domain are necessary to elicit toxicity in MECP2 duplication syndrome.
Novel virus-host systems yield insights into how Lepidopterans (moths and butterflies) combat RNA virus infection and reveal that poxvirus A51R proteins can suppress the host's immune system and stabilize microtubules in host cells.
A structural and biochemical study of human SYCP3 provides the first molecular model for the three-dimensional organisation that is imposed upon chromosomal DNA during meiosis and is essential for genetic exchange and fertility.
A few circadian ‘evening’ neurons within the Drosophila brain play a key role in driving activity as well as keeping time, whereas the well-known PDF-containing morning cells are likely involved in integrating and transmitting light information.
In addition to its cytoplasmic role for translation, the seryl-tRNA synthetase also antagonizes the c-Myc transcription factor in the nucleus to transcriptionally repress the growth factor VEGFA and ensure proper development of the vasculature in vertebrates.
Midbrain dopaminergic neurons and a cortex-like structure called the arcopallium form part of a circuit that enables young songbirds to compare their own song with a template stored in memory, and use any discrepancies to improve their performance.
The RNA-binding protein MSI1, which is required for stem cell and cancer cell proliferation in the brain and epithelial tissues, also directly senses the concentration of long non-esterified omega-9 fatty acids.
The transcription factor Pou3f1 triggers embryonic stem cells to become neuronal progenitor cells in two ways: by activating the expression of pro-neuronal genes and by blocking external inhibitory signaling cascades.
While the transcription factor c-Myc explores the space in the nucleus in an unrestricted manner, the elongation factor P-TEFb's sampling of the nucleus is constrained to a complex domain with fractal characteristics.
In nematode worms, the length of the male refractory period–the time between matings–is regulated by multiple transmitters including dopamine, which both promotes ejaculation and reduces the activity of males post-copulation.
A systematic comparison of experimentally measured and theoretically predicted magnitudes of organelle abundance fluctuations suggests that budding yeast produces the maximum level of variability in organelle abundance that can be generated by organelle biogenesis pathways.
The molecular mechanism behind how emetine inhibits the ribosome of the human malaria parasite, along with structural details of the complex formed, is revealed at high resolution using cryo-electron microscopy.
Inactivation of a multifunctional RNA-binding protein can lead to the acquisition of pro-metastatic phenotypes, possibly by stabilizing large-scale transcriptomic changes that provide a selective advantage during cancer progression.
A freely available computer program that takes into account specific local conditions enables users to predict the impact of adopting different diagnostic strategies on the spread of tuberculosis in their region.
Male and female mice respond differently to the same pheromone signals, and the representation of these sensory stimuli by neurons in the medial amygdala correlates precisely with the differences in behavior.
In the cytosol, the proteins constituting cell-matrix adhesion sites form multi-protein building blocks which enter and leave these sites unaltered, thereby contributing to their rapid and correct self-assembly.