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    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary changes in transcription factor coding sequence quantitatively alter sensory organ development and function

    Simon Weinberger et al.
    The coding sequences of a very highly conserved family of neurogenic transcription factors from different species have evolved to generate proteins that have different life times causing them to display quantitatively different neural induction potentials.
    1. Ecology

    Acknowledging selection at sub-organismal levels resolves controversy on pro-cooperation mechanisms

    Wenying Shou
    Building on previous work (Momeni et al., 2013), it is shown that recognizing the hierarchical organization of biological systems resolves the ongoing controversy on pro-cooperation mechanisms.
    1. Developmental Biology

    Ancient origin of lubricated joints in bony vertebrates

    Amjad Askary et al.
    Zebrafish have lubricated joints similar to ours and are a tractable model for arthritis research.
    1. Cell Biology

    Spatial sequestration and detoxification of Huntingtin by the ribosome quality control complex

    Junsheng Yang et al.
    A genome-wide screen in yeast reveals that key proteins in ribosome quality control also regulate mutant Huntingtin aggregation and toxicity.
    1. Cell Biology

    Cooperation of the ER-shaping proteins atlastin, lunapark, and reticulons to generate a tubular membrane network

    Songyu Wang et al.
    Experiments with mammalian cells and Xenopus egg extracts elucidate how three proteins cooperate to shape the reticular endoplasmic reticulum network.
    1. Chromosomes and Gene Expression

    Nucleosomes impede Cas9 access to DNA in vivo and in vitro

    Max A Horlbeck et al.
    Nucleosomes provide a direct and profound block to the activity of the CRISPR effector protein Cas9, suggesting future sophisticated design rules for CRISPR targeting.
    1. Stem Cells and Regenerative Medicine

    Embryonic attenuated Wnt/β-catenin signaling defines niche location and long-term stem cell fate in hair follicle

    Zijian Xu et al.
    Long-term hair follicle stem cells arise by embryonic progenitor cells occupying a niche location that is defined by attenuated Wnt/β-catenin signal.
    1. Genetics and Genomics

    RNA-programmed genome editing in human cells

    Martin Jinek et al.
    A bacterial protein can be programmed with short RNA molecules to stimulate genome editing at specific sites in human cells.
    1. Neuroscience

    SIR-2.1 integrates metabolic homeostasis with the reproductive neuromuscular excitability in early aging male Caenorhabditis elegans

    Xiaoyan Guo, L René García
    A protein called SIR-2.1 helps to protect worms from the effects of aging by regulating metabolic processes that would otherwise generate damaging reactive oxygen species.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Enhanced homology-directed human genome engineering by controlled timing of CRISPR/Cas9 delivery

    Steven Lin et al.
    Building on previous work (Jinek et al., 2013), we report a simple and robust system to achieve high fidelity and high efficiency (30% of homologous recombination) genome engineering by homology-directed repair pathway in human cells using cell cycle synchronization and timed delivery of Cas9 ribonucleoprotein complexes.