作者：Nusinovich, Yevgeniya; Ucko, Isaac Nusinovich
作者：Stefansson, Gudmundur; Mahadevan, Suvrath; Miguel, Yamila; Robertson, Paul; Delamer, Megan; Kanodia, Shubham; Canas, Caleb I.; Winn, Joshua N.; Ninan, Joe P.; Terrien, Ryan C.; Holcomb, Rae; Ford, Eric B.; Zawadzki, Brianna; Bowler, Brendan P.; Bender, Chad F.; Cochran, William D.; Diddams, Scott; Endl, Michael; Fredrick, Connor; Halverson, Samuel; Hearty, Fred; Hill, Gary J.; Lin, Andrea S. J.; Metcalf, Andrew J.; Monson, Andrew; Ramsey, Lawrence; Roy, Arpita; Schwab, Christian; Wright, Jason T.; Zeimann, Gregory
作者单位：Princeton University; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Swiss Federal Institutes of Technology Domain; ETH Zurich; Leiden University; Leiden University - Excl LUMC; University of California System; University of California Irvine; Carnegie Institution for Science; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Tata Institute of Fundamental Research (TIFR); Carleton College; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of Texas System; University of Texas Austin; University of Arizona; University of Texas System; University of Texas Austin; University of Texas System; University of Texas Austin; University of Colorado System; University of Colorado Boulder; National Institute of Standards & Technology (NIST) - USA; University of Colorado System; University of Colorado Boulder; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); California Institute of Technology; United States Department of Defense; United States Air Force; US Air Force Research Laboratory; Space Telescope Science Institute; Johns Hopkins University; Macquarie University; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of Texas System; University of Texas Austin
摘要：Theories of planet formation predict that low-mass stars should rarely host exoplanets with masses exceeding that of Neptune. We used radial velocity observations to detect a Neptune-mass exoplanet orbiting LHS 3154, a star that is nine times less massive than the Sun. The exoplanet's orbital period is 3.7 days, and its minimum mass is 13.2 Earth masses. We used simulations to show that the high planet-to-star mass ratio (>3.5 x 10(-3)) is not an expected outcome of either the core accretion o...
作者：Mogila, Irmantas; Tamulaitiene, Giedre; Keda, Konstanty; Timinskas, Albertas; Ruksenaite, Audrone; Sasnauskas, Giedrius; Venclovas, Ceslovas; Siksnys, Virginijus; Tamulaitis, Gintautas
作者单位：Vilnius University
摘要：Prokaryotic type III CRISPR-Cas antiviral systems employ cyclic oligoadenylate (cA(n)) signaling to activate a diverse range of auxiliary proteins that reinforce the CRISPR-Cas defense. Here we characterize a class of cA(n)-dependent effector proteins named CRISPR-Cas-associated messenger RNA (mRNA) interferase 1 (Cami1) consisting of a CRISPR-associated Rossmann fold sensor domain fused to winged helix-turn-helix and a RelE-family mRNA interferase domain. Upon activation by cyclic tetra-adeny...
