811 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Drosophila seminal sex peptide associates with rival as well as own sperm, providing SP function in polyandrous females

    Snigdha Misra, Mariana F Wolfner
    A seminal protein from a mating-male can bind sperm previously stored in his mate, providing direct benefits to the sperm from the prior male that mated with her.
    1. Evolutionary Biology

    Sperm competition risk drives rapid ejaculate adjustments mediated by seminal fluid

    Michael J Bartlett, Tammy E Steeves ... Patrice C Rosengrave
    Seminal fluid harbours the as yet unknown mechanism that facilitates rapid adjustment of sperm velocity in response to changing sperm competition risk.
    1. Chromosomes and Gene Expression

    An ancient germ cell-specific RNA-binding protein protects the germline from cryptic splice site poisoning

    Ingrid Ehrmann, James H Crichton ... David J Elliott
    Cell division by meiosis during sperm production depends on expression of an RNA-binding protein that prevents abnormal RNA-processing pathways.
    1. Physics of Living Systems

    Sperm chemotaxis is driven by the slope of the chemoattractant concentration field

    Héctor Vicente Ramírez-Gómez, Vilma Jimenez Sabinina ... Adán Guerrero
    The slope of the chemoattractant concentration gradient is a driving force for sperm chemotaxis, by coordinating the entrainment of information flow between sensing, signaling and motility.
    1. Developmental Biology

    Oviductal estrogen receptor α signaling prevents protease-mediated embryo death

    Wipawee Winuthayanon, Miranda L Bernhardt ... Carmen J Williams
    Cyclic estrogen signaling in oviduct epithelial cells suppresses oviduct luminal protease activity to allow survival and development of preimplantation embryos
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    3D in situ imaging of the female reproductive tract reveals molecular signatures of fertilizing spermatozoa in mice

    Lukas Ded, Jae Yeon Hwang ... Jean-Ju Chung
    Fertilizing mouse spermatozoa, characterized by intact CatSper channels, lack of protein tyrosine phosphorylation, and reacted acrosomes, in the female reproductive tract provide molecular insight into sperm selection for successful fertilization.
    1. Structural Biology and Molecular Biophysics

    Semen amyloids participate in spermatozoa selection and clearance

    Nadia R Roan, Nathallie Sandi-Monroy ... Warner C Greene
    Ex vivo characterization of the interaction of human sperm with semen factors reveals that semen amyloids, previously discovered due to their ability to enhance HIV infection, serve a physiological function by promoting disposal of the defective sperm.
    1. Evolutionary Biology
    2. Genetics and Genomics

    The seminal odorant binding protein Obp56g is required for mating plug formation and male fertility in Drosophila melanogaster

    Nora C Brown, Benjamin Gordon ... Mariana Federica Wolfner
    A functional genetics approach reveals a novel role for odorant binding proteins in post-mating processes, with complex mechanisms of evolutionary change across closely related insect species.
    1. Evolutionary Biology
    2. Structural Biology and Molecular Biophysics

    Indirect sexual selection drives rapid sperm protein evolution in abalone

    Damien Beau Wilburn, Lisa M Tuttle ... Willie J Swanson
    An NMR-based structural study of sperm proteins reveals a novel protein packaging/dispersion system embedded in a coevolutionary arms race.
    1. Cell Biology
    2. Physics of Living Systems

    Flagellar energetics from high-resolution imaging of beating patterns in tethered mouse sperm

    Ashwin Nandagiri, Avinash Satish Gaikwad ... Ranganathan Prabhakar
    Calculations of flagellar energetics from beating patterns in sperm reveal that internal dissipation by dynein motors and other passive structures within the flagellum significantly exceeds external hydrodynamic dissipation.

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