2,291 results found
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Structure of the germline genome of Tetrahymena thermophila and relationship to the massively rearranged somatic genome

    Eileen P Hamilton et al.
    The model organism Tetrahymena thermopile carries two nuclei with distinct genomes: an unrearranged germline genome with five chromosomes, and a somatic genome reduced in size by a third and with 181 chromosomes.
    1. Neuroscience

    Synchronized excitability in a network enables generation of internal neuronal sequences

    Yingxue Wang et al.
    Hippocampal sharp-wave sequences, which are considered the key phenomenon underlying consolidation of episodic memory, are preserved even after an animal’s memory is impaired.
    1. Chromosomes and Gene Expression

    Six domesticated PiggyBac transposases together carry out programmed DNA elimination in Paramecium

    Julien Bischerour et al.
    The machinery that carries out programmed DNA rearrangements is composed of domesticated transposases. One is catalytically active, five play architectural function essential for the accuracy of the process.
    1. Chromosomes and Gene Expression

    Translational initiation in E. coli occurs at the correct sites genome-wide in the absence of mRNA-rRNA base-pairing

    Kazuki Saito et al.
    E. coli ribosomes incapable of base-pairing with the Shine-Dalgarno sequence are still selective for annotated start sites, indicating these sites are hard-wired for initiation by other mRNA features.
    1. Biochemistry and Chemical Biology

    Kinetics of initiating polypeptide elongation in an IRES-dependent system

    Haibo Zhang et al.
    The retarding effect of a ribosome-bound internal ribosome entry site on eukaryotic protein synthesis is largely overcome following translocation of tripeptidyl-tRNA.
    1. Neuroscience

    Analysis of ultrasonic vocalizations from mice using computer vision and machine learning

    Antonio HO Fonseca et al.
    An open-source tool based on computational vision and machine learning shows high accuracy and sensitivity in the analysis of ultrasonic vocalizations.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Vasohibin1, a new mouse cardiomyocyte IRES trans-acting factor that regulates translation in early hypoxia

    Fransky Hantelys et al.
    In mouse cardiomyocytes, (lymph)angiogenic growth factors are induced during early hypoxia by a translational mechanism involving a new IRES trans-acting factor, vasohibin-1.
    1. Developmental Biology

    Is it possible to reconstruct an accurate cell lineage using CRISPR recorders?

    Irepan Salvador-Martínez et al.
    Computer simulations reveal the potential and limitations of recently proposed CRISPR-based cell lineage recorders, and suggest how the recorders' design can be optimised to yield more accurate cell lineage trees.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Juxtaposition of heterozygous and homozygous regions causes reciprocal crossover remodelling via interference during Arabidopsis meiosis

    Piotr A Ziolkowski et al.
    Heterozygosity changes the balance between interfering and non-interfering crossovers during Arabidopsis meiosis.
    1. Evolutionary Biology

    The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa

    Paul HGM Dirks et al.
    Independent dating techniques have established that the H. naledi fossils are between 236 and 335 thousand years old, indicating that small-brained hominins with relatively primitive body shapes co-existed with our early ancestors in Africa.

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