- Evidence for Interstitial Carbon in Nitrogenase FeMo Cofactor
[作者:Spatzal, T; Aksoyoglu, M; Zhang, LM; Andrade, SLA; Schleicher, E; Weber, S; Rees, DC; Einsle, O,期刊:Science, 页码:940-940 , 文章类型: Article,,卷期:2011年334-6058]
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- Crystal Structure of the Eukaryotic 60S Ribosomal Subunit in Complex with Initiation Factor 6
[作者:Klinge, S; Voigts-Hoffmann, F; Leibundgut, M; Arpagaus, S; Ban, N,期刊:Science, 页码:941-948 , 文章类型: Article,,卷期:2011年334-6058]
- Protein synthesis in all organisms is catalyzed by ribosomes. In comparison to their prokaryotic counterparts, eukaryotic ribosomes are considerably larger and are subject to more complex regulation. The large ribosomal ...
- The Large, Oxygen-Rich Halos of Star-Forming Galaxies Are a Major Reservoir of Galactic Metals
[作者:Tumlinson, J; Thom, C; Werk, JK; Prochaska, JX; Tripp, TM; Weinberg, DH; Peeples, MS; O'Meara, JM; Oppenheimer, BD; Meiring, JD; Katz, NS; Dave, R; Ford, AB; Sembach, KR,期刊:Science, 页码:948-952 , 文章类型: Article,,卷期:2011年334-6058]
- The circumgalactic medium (CGM) is fed by galaxy outflows and accretion of intergalactic gas, but its mass, heavy element enrichment, and relation to galaxy properties are poorly constrained by observations. In a survey ...
- The Hidden Mass and Large Spatial Extent of a Post-Starburst Galaxy Outflow
[作者:Tripp, TM; Meiring, JD; Prochaska, JX; Willmer, CNA; Howk, JC; Werk, JK; Jenkins, EB; Bowen, DV; Lehner, N; Sembach, KR; Thom, C; Tumlinson, J,期刊:Science, 页码:952-955 , 文章类型: Article,,卷期:2011年334-6058]
- Outflowing winds of multiphase plasma have been proposed to regulate the buildup of galaxies, but key aspects of these outflows have not been probed with observations. By using ultraviolet absorption spectroscopy, we sho...
- Giant Piezoelectricity on Si for Hyperactive MEMS
[作者:Baek, SH; Park, J; Kim, DM; Aksyuk, VA; Das, RR; Bu, SD; Felker, DA; Lettieri, J; Vaithyanathan, V; Bharadwaja, SSN; Bassiri-Gharb, N; Chen, YB; Sun, HP; Folkman, CM; Jang, HW; Kreft, DJ; Streiffer, SK; Ramesh, R; Pan, XQ; Trolier-McKinstry, S; Schlom, DG; Rzchowski, MS; Blick, RH; Eom, CB,期刊:Science, 页码:958-961 , 文章类型: Article,,卷期:2011年334-6058]
- Microelectromechanical systems (MEMS) incorporating active piezoelectric layers offer integrated actuation, sensing, and transduction. The broad implementation of such active MEMS has long been constrained by the inabili...
- Ultralight Metallic Microlattices
[作者:Schaedler, TA; Jacobsen, AJ; Torrents, A; Sorensen, AE; Lian, J; Greer, JR; Valdevit, L; Carter, WB,期刊:Science, 页码:962-965 , 文章类型: Article,,卷期:2011年334-6058]
- Ultralight (<10 milligrams per cubic centimeter) cellular materials are desirable for thermal insulation; battery electrodes; catalyst supports; and acoustic, vibration, or shock energy damping. We present ultralight mat...
- Domain Dynamics During Ferroelectric Switching
[作者:Nelson, CT; Gao, P; Jokisaari, JR; Heikes, C; Adamo, C; Melville, A; Baek, SH; Folkman, CM; Winchester, B; Gu, YJ; Liu, YM; Zhang, K; Wang, EG; Li, JY; Chen, LQ; Eom, CB; Schlom, DG; Pan, XQ,期刊:Science, 页码:968-971 , 文章类型: Article,,卷期:2011年334-6058]
- The utility of ferroelectric materials stems from the ability to nucleate and move polarized domains using an electric field. To understand the mechanisms of polarization switching, structural characterization at the nan...
- Negative Frequency-Dependent Selection of Sexually Antagonistic Alleles in Myodes glareolus
[作者:Mokkonen, M; Kokko, H; Koskela, E; Lehtonen, J; Mappes, T; Martiskainen, H; Mills, SC,期刊:Science, 页码:972-974 , 文章类型: Article,,卷期:2011年334-6058]
- Sexually antagonistic genetic variation, where optimal values of traits are sex-dependent, is known to slow the loss of genetic variance associated with directional selection on fitness-related traits. However, sexual an...
- X-ray Emission Spectroscopy Evidences a Central Carbon in the Nitrogenase Iron-Molybdenum Cofactor
[作者:Lancaster, KM; Roemelt, M; Ettenhuber, P; Hu, YL; Ribbe, MW; Neese, F; Bergmann, U; DeBeer, S,期刊:Science, 页码:974-977 , 文章类型: Article,,卷期:2011年334-6058]
- Nitrogenase is a complex enzyme that catalyzes the reduction of dinitrogen to ammonia. Despite insight from structural and biochemical studies, its structure and mechanism await full characterization. An iron-molybdenum ...
- Active Starvation Responses Mediate Antibiotic Tolerance in Biofilms and Nutrient-Limited Bacteria
[作者:Nguyen, D; Joshi-Datar, A; Lepine, F; Bauerle, E; Olakanmi, O; Beer, K; McKay, G; Siehnel, R; Schafhauser, J; Wang, Y; Britigan, BE; Singh, PK,期刊:Science, 页码:982-986 , 文章类型: Article,,卷期:2011年334-6058]
- Bacteria become highly tolerant to antibiotics when nutrients are limited. The inactivity of antibiotic targets caused by starvation-induced growth arrest is thought to be a key mechanism producing tolerance. Here we sho...
- H2S: A Universal Defense Against Antibiotics in Bacteria
[作者:Shatalin, K; Shatalina, E; Mironov, A; Nudler, E,期刊:Science, 页码:986-990 , 文章类型: Article,,卷期:2011年334-6058]
- Many prokaryotic species generate hydrogen sulfide (H2S) in their natural environments. However, the biochemistry and physiological role of this gas in nonsulfur bacteria remain largely unknown. Here we demonstrate that ...
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