Contents
Vol 314, Issue 5804
Special Issue
Cell Signaling
Introduction to special issue
Perspectives
Contents
This Week in Science
Editorial
Editors' Choice
Products & Materials
News of the Week
ScienceScope
Random Samples
Newsmakers
News Focus
Letters
Books
Policy Forum
Perspectives
Brevia
- Old-Growth Forests Can Accumulate Carbon in Soils
Old-growth forests in Southern China accumulated atmospheric carbon at a rate considerably greater than expected for broadleaved evergreen forests.
Research Article
- Phytoplankton and Cloudiness in the Southern Ocean
Oxidation of aerosols released from a phytoplankton bloom doubled the number of droplets in overlying clouds and reflected solar radiation as much as severe air pollution.
Reports
- Fast Variability of Tera–Electron Volt γ Rays from the Radio Galaxy M87
Very-high-energy gamma rays from the radio galaxy M87 vary daily, implying that they originate close to the central supermassive black hole.
- Solid-State Qubits with Current-Controlled Coupling
Manipulation of the mutual inductance between two qubits can be used to switch their coupling on and off.
- Optical Atomic Coherence at the 1-Second Time Scale
A highly stable laser and the ability to trap a large number of atoms coherently provide a tenfold increase in measuring spectral lines needed for precision applications.
- Macroscopic Hierarchical Surface Patterning of Porphyrin Trimers via Self-Assembly and Dewetting
Upon dewetting, a molecule containing porphyrin and long alkyl groups can self-assemble in long chains and patterns over areas as large as several square millimeters.
- Probing the Chiroptical Response of a Single Molecule
Circular dichroism spectra at high resolution reveal that weak aggregate signals arise because the effects of distinct conformations in a chiral ensemble cancel each other.
- Organic Globules in the Tagish Lake Meteorite: Remnants of the Protosolar Disk
Carbon-rich nanospheres in a primitive meteorite are relatively enriched in the heavy nitrogen isotopes and deuterium, suggesting that these grains have a pre-solar origin.
- Increasing Trend of Extreme Rain Events Over India in a Warming Environment
The frequency and intensity of heavy rainfall events during monsoon storms in Central India have increased during the past 50 years as the climate there has warmed.
- Male Fertility and Sex Ratio at Birth in Red Deer
Like females, males can affect offspring sex ratio; more-fertile male red deer sire more sons and less-fertile males sire more daughters.
- WNT and DKK Determine Hair Follicle Spacing Through a Reaction-Diffusion Mechanism
Modeling and experimental tests explain how a growth factor and its inhibitor determine the density and pattern of hair follicles in the developing mouse.
- Structural Basis for Ribosome Recruitment and Manipulation by a Viral IRES RNA
The structure of a viral RNA containing an internal ribosomal entry site suggests how translation can begin in the middle of a messenger RNA.
- Rapid Chemically Induced Changes of PtdIns(4,5)P2 Gate KCNQ Ion Channels
Neurotransmitters close a potassium channel by changing the lipid content of the surrounding plasma membrane.
- PI(3,4,5)P3 and PI(4,5)P2 Lipids Target Proteins with Polybasic Clusters to the Plasma Membrane
Two phospholipid signaling molecules are also essential to anchor proteins that have clusters of basic amino acids to the cell membrane.
- A Genome-Wide Association Study Identifies IL23R as an Inflammatory Bowel Disease Gene
People with a rare sequence variant of the gene encoding the receptor for an immunological cytokine have a reduced risk of inflammatory bowel disease.
- Microfluidic Digital PCR Enables Multigene Analysis of Individual Environmental Bacteria
A DNA analysis method that can link genes to individual organisms collected in the wild is used to identify a gut symbiont of the termite.
- Prevention of Brca1-Mediated Mammary Tumorigenesis in Mice by a Progesterone Antagonist
Experiments in mice suggest that a mutation leading to breast cancer acts in part by altering signaling by the steroid hormone progesterone.
Technical Comments
