December 2012

Research articles

    1. Structural Biology and Molecular Biophysics

    rsEGFP2 enables fast RESOLFT nanoscopy of living cells

    Tim Grotjohann, Ilaria Testa ... Stefan Jakobs
    The discovery of a fluorescent protein that can be rapidly switched between long-lived ‘on’ and ‘off’ states will lead to a new generation of super-resolution imaging experiments on living cells.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Meiosis I chromosome segregation is established through regulation of microtubule–kinetochore interactions

    Matthew P Miller, Elçin Ünal ... Angelika Amon
    Preventing premature interactions between microtubules and protein-based structures called kinetochores ensures that chromosomes are segregated by meiosis rather than mitosis in reproductive cells.
    1. Microbiology and Infectious Disease

    Population structuring of multi-copy, antigen-encoding genes in Plasmodium falciparum

    Yael Artzy-Randrup, Mary M Rorick ... Mercedes Pascual
    Mathematical modeling shows that local populations of the malaria parasite self-organize into a limited number of transient but distinct strains through competition for hosts in immunity space.
    1. Structural Biology and Molecular Biophysics

    Modelling dynamics in protein crystal structures by ensemble refinement

    B Tom Burnley, Pavel V Afonine ... Piet Gros
    A combination of molecular dynamics simulations and X-ray diffraction data has been used to construct more realistic models of proteins and to provide new insights into their interactions with other proteins and biomolecules.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    DNA-PK is a DNA sensor for IRF-3-dependent innate immunity

    Brian J Ferguson, Daniel S Mansur ... Geoffrey L Smith
    Experiments in mice have shown than an enzyme that repairs broken DNA inside the nucleus also has a central role in the innate immune system because it is able to detect foreign DNA outside the nucleus.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Doxorubicin blocks proliferation of cancer cells through proteolytic activation of CREB3L1

    Bray Denard, Ching Lee, Jin Ye
    Cleavage of a membrane-bound transcription factor by the chemotherapeutic reagent doxorubicin can block the proliferation of tumor cells.
    1. Developmental Biology
    2. Neuroscience

    Morphologic diversity of cutaneous sensory afferents revealed by genetically directed sparse labeling

    Hao Wu, John Williams, Jeremy Nathans
    The first survey of the complete morphologies of nerve endings in the skin of mice has revealed enormous structural diversity.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    KDM2B links the Polycomb Repressive Complex 1 (PRC1) to recognition of CpG islands

    Anca M Farcas, Neil P Blackledge ... Robert J Klose
    A protein that can recognize regions of DNA with a high proportion of unmethylated CpG dinucleotides, and then recruit polycomb group proteins to these CpG islands, has been identified.
    1. Biochemistry and Chemical Biology

    RecA filament sliding on DNA facilitates homology search

    Kaushik Ragunathan, Cheng Liu, Taekjip Ha
    A DNA–protein complex can find target sequences of bases in another DNA molecule by sliding along it.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Global divergence in critical income for adult and childhood survival: analyses of mortality using Michaelis–Menten

    Ryan J Hum, Prabhat Jha ... Yu-Ling Cheng
    A mathematical model based on enzyme kinetics shows how the relationships between life expectancy, survival rates for children and adults, and national income change over time.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Elba, a novel developmentally regulated chromatin boundary factor is a hetero-tripartite DNA binding complex

    Tsutomu Aoki, Ali Sarkeshik ... Paul Schedl
    A chromatin boundary factor that is only active during early embryo development has been discovered in Drosophila.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Synaptic proteins promote calcium-triggered fast transition from point contact to full fusion

    Jiajie Diao, Patricia Grob ... Axel T Brunger
    A combination of advanced optical imaging and cryogenic electron microscopy has been used to explore membrane fusion in a synthetic system and provide new insights into neurotransmitter release.
    1. Neuroscience

    The activity-dependent histone variant H2BE modulates the life span of olfactory neurons

    Stephen W Santoro, Catherine Dulac
    A genome-organizing protein that is present only in the olfactory system of mice has been found to orchestrate changes in the relative numbers of different odor-sensing neurons on the basis of how active these neurons are.
    1. Cell Biology
    2. Evolutionary Biology

    Chromatin is an ancient innovation conserved between Archaea and Eukarya

    Ron Ammar, Dax Torti ... Corey Nislow
    Similarities in the way that nucleosomes are organized into chromatin in archaea and eukaryotes suggest that chromatin might have been involved in gene regulation before its role in DNA packaging evolved.
    1. Structural Biology and Molecular Biophysics

    Distinct gating mechanisms revealed by the structures of a multi-ligand gated K+ channel

    Chunguang Kong, Weizhong Zeng ... Youxing Jiang
    Structural and functional studies of a potassium ion channel that is opened and closed by different ligands have revealed a novel gating mechanism.