132 results found
    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. Cell Biology
    2. Developmental Biology

    Ovulation in Drosophila is controlled by secretory cells of the female reproductive tract

    Jianjun Sun, Allan C Spradling
    Secretory cells in the fruit fly reproductive tract produce secretions that control ovulation through a conserved mechanism that could provide insights into ovarian cancer.
    1. Biochemistry and Chemical Biology
    2. Ecology

    ABC transporter functions as a pacemaker for sequestration of plant glucosides in leaf beetles

    Anja S Strauss et al.
    A transport protein enables leaf beetle larvae to take up and store plant toxins and use them as part of their own defense strategy.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Crystal structures of virus-like photosystem I complexes from the mesophilic cyanobacterium Synechocystis PCC 6803

    Yuval Mazor et al.
    The structure of the photosystem I (PSI) complex from Synechocystis is determined, and reaction center subunits engineered to resemble a viral PSI are found to promote promiscuous electron acceptor properties.
    1. Structural Biology and Molecular Biophysics

    How HIV-1 Nef hijacks the AP-2 clathrin adaptor to downregulate CD4

    Xuefeng Ren et al.
    The structure of the Nef:AP-2 complex has been determined and used as the basis of a model that explains how HIV-1 Nef downregulates the CD4 receptor from the surface of the infected cells.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    GE23077 binds to the RNA polymerase ‘i’ and ‘i+1’ sites and prevents the binding of initiating nucleotides

    Yu Zhang et al.
    The cyclic-peptide antibiotic GE23077 inhibits bacterial RNA polymerase through a novel target that exhibits low susceptibility to target-based resistance and that enables synthesis of bipartite inhibitors that are exceptionally potent and refractory to target-based resistance.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    AFF4 binding to Tat-P-TEFb indirectly stimulates TAR recognition of super elongation complexes at the HIV promoter

    Ursula Schulze-Gahmen et al.
    AFF4 increases the combined selectivity of HIV Tat and TAR for super elongation complexes 330-fold over P-TEFb alone.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Bacterial actin MreB forms antiparallel double filaments

    Fusinita van den Ent et al.
    The prokaryotic actin homologue MreB forms antiparallel double filaments in vitro and in vivo, an architecture that is unprecedented among the actin family of proteins.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The pseudo GTPase CENP-M drives human kinetochore assembly

    Federica Basilico et al.
    Centromeric protein M (CENP-M) is required for the stabilization of a quaternary complex that plays a crucial role in kinetochore organization and function.
    1. Structural Biology and Molecular Biophysics

    Designed α-sheet peptides inhibit amyloid formation by targeting toxic oligomers

    Gene Hopping et al.
    Novel designed alpha-sheet peptides inhibit amyloidosis in two different systems and preferentially bind the toxic oligomer.

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