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    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    The AFF4 scaffold binds human P-TEFb adjacent to HIV Tat

    Ursula Schulze-Gahmen et al.
    Structure-function analysis of the super elongation complex formed when HIV replicates inside cells reveals that the HIV-1 Tat protein binds to a cleft between P-TEFb, an enzyme that is involved in normal transcription, and AFF4, a protein that is used to build the super elongation complex
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    SMC condensin entraps chromosomal DNA by an ATP hydrolysis dependent loading mechanism in Bacillus subtilis

    Larissa Wilhelm et al.
    The Smc–ScpAB complex-a prokaryotic ancestor of cohesin, condensin and Smc5/6-loads onto the bacterial chromosome by employing ATP hydrolysis to capture DNA fibers within its tripartite ring.
    1. Structural Biology and Molecular Biophysics

    HDX-MS reveals nucleotide-dependent, anti-correlated opening and closure of SecA and SecY channels of the bacterial translocon

    Zainab Ahdash et al.
    Hydrogen-deuterium exchange mass spectrometry reveals nucleotide-driven conformational regulation of Sec protein-channel to help impose directionality for protein transport through the Sec complex.
    1. Developmental Biology

    Regulation of the Drosophila ID protein Extra macrochaetae by proneural dimerization partners

    Ke Li, Nicholas E Baker
    Developmental genetic and cell culture studies indicate that the Inhibitor of DNA-binding protein Extra macrochaetae (Emc), previously thought to determine where bHLH proteins can act, is itself regulated by those bHLH dimerization partners at the level of protein stability.
    1. Biochemistry and Chemical Biology

    A novel DNA primase-helicase pair encoded by SCCmec elements

    Aleksandra Bebel et al.
    SCCmec genomic islands encode a novel primase-helicase pair in which priming ability is conferred upon an A-family DNA polymerase domain by a novel protein cofactor.
    1. Neuroscience

    Decreased microRNA levels lead to deleterious increases in neuronal M2 muscarinic receptors in Spinal Muscular Atrophy models

    Patrick J O'Hern et al.
    In invertebrate and vertebrate models of Spinal Muscular Atrophy, diminished SMN protein causes Gemin3-dependent decreases in microRNA function, leading to upregulated M2 muscarinic receptor and deleterious consequences.
    1. Genetics and Genomics

    Point of View: Bioengineering horizon scan 2020

    Luke Kemp et al.
    20 emerging issues in bioengineering that will have profound impacts on society have been identified.