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    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Intracellular complexities of acquiring a new enzymatic function revealed by mass-randomisation of active-site residues

    Kelsi R Hall et al.
    Evolving E. coli NfsA for enhanced chloramphenicol detoxification in the native host environment shows that eliminating substrate competition can occur rapidly, and be key to evolving a new enzymatic function.
    1. Immunology and Inflammation
    2. Structural Biology and Molecular Biophysics

    Biochemical patterns of antibody polyreactivity revealed through a bioinformatics-based analysis of CDR loops

    Christopher T Boughter et al.
    A new software developed for high-throughput antibody, T cell receptor, and MHC repertoire analysis uncovers neutrality of the binding interface and intramolecular crosstalk as distinguishing properties of polyreactive antibodies.
    1. Biochemistry and Chemical Biology

    Protomer alignment modulates specificity of RNA substrate recognition by Ire1

    Weihan Li et al.
    Biochemical analysis and computational modeling reveal how cells mechanistically control the quality of their proteomes and demonstrate that the precise alignment of subunits in oligomeric complexes can profoundly affect enzymatic properties.
    1. Evolutionary Biology
    2. Plant Biology

    Evolutionary routes to biochemical innovation revealed by integrative analysis of a plant-defense related specialized metabolic pathway

    Gaurav D Moghe et al.
    Integrative analysis of a specialized metabolic pathway across multiple non-model species illustrates mechanisms of emergence of chemical novelty in plant metabolism.
    1. Evolutionary Biology

    Primary and promiscuous functions coexist during evolutionary innovation through whole protein domain acquisitions

    José Antonio Escudero et al.
    The coexistence of ancestral and innovative functions is possible and fosters evolutionary innovation in events involving the acquisition of whole protein domains.
    1. Evolutionary Biology
    2. Plant Biology

    Independent evolution of ancestral and novel defenses in a genus of toxic plants (Erysimum, Brassicaceae)

    Tobias Züst et al.
    A gain-of-function in a new chemical defense resulted in no trade-offs and and independent evolution between novel and ancestral defenses, suggesting low redundancy among different defensive chemicals.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Ancient origins of arthropod moulting pathway components

    André Luiz de Oliveira et al.
    Evolutionary reconstruction of the ecdysis pathway shows that its major elements are present in the majority of metazoans, providing evidence that they originated much earlier than currently assumed.
    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ring-like oligomers of Synaptotagmins and related C2 domain proteins

    Maria N Zanetti et al.
    A model for synchronous neurotransmitter release suggests that when not in the presence of calcium ions, Synaptotagmin proteins form ring-like structures between the vesicle and plasma membrane that prevent spontaneous fusion.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Mitochondrial copper and phosphate transporter specificity was defined early in the evolution of eukaryotes

    Xinyu Zhu et al.
    Ancient evolutionary signatures reveal mechanistic details of substrate specificity in copper-transporting mitochondria carrier family proteins.