Contents
Vol 306, Issue 5705
Contents
This Week in Science
Editorial
Editors' Choice
NetWatch
Departments
Products & Materials
News of the Week
ScienceScope
Random Samples
News Focus
Letters
Books
Policy Forum
Perspectives
Association Affairs
Review
Brevia
- Cumulative Sperm Whale Bone Damage and the Bends
Bones from sperm whales contain lesions indicative of chronic decompression sickness, overturning the dogma that these animals are immune.
Research Article
- Distributions of Microbial Activities in Deep Subseafloor Sediments
Measurements of biomolecules and metabolic activity in several drill cores reveal that Pacific Ocean sediments host diverse microbial communities.
Reports
- Electron Coherence in a Melting Lead Monolayer
Fixing a thin lead layer to a solid copper substrate allows the electronic properties of molten lead to be successfully probed, revealing how conducting electrons become localized as the metal melts.
- Detection of a Deep 3-µm Absorption Feature in the Spectrum of Amalthea (JV)
Amalthea, a small moon of Jupiter, is covered with hydrous minerals or organic matter, indicating that it formed far from Jupiter, reaching its present location by migration or capture.
- First-Principles Theory for the H + CH4 → H2 + CH3 Reaction
A quantum mechanical calculation accurately describes rate constants for a six-atom reaction, that of hydrogen with methane, over a range of temperatures.
- Reduced Competition and Altered Feeding Behavior Among Marine Snails After a Mass Extinction
Although species diversity recovered quickly after a mass extinction 3 million years ago, predatory snails changed their feeding behavior in a way that reflected a decrease in competition.
- The Duration of Forest Stages in Southern Europe and Interglacial Climate Variability
Climate and pollen records from the same deep-sea cores show that some forest ecosystems responded slowly to glacial climate swings, whereas others declined irreversibly even during relatively stable periods.
- Asynchronous Terrestrial and Marine Signals of Climate Change During Heinrich Events
Climate and pollen records from the same deep-sea cores show that some forest ecosystems responded slowly to glacial climate swings, whereas others declined irreversibly even during relatively stable periods.
- Seismological Constraints on Core Composition from Fe-O-S Liquid Immiscibility
Seismic data indicate that Earth's liquid iron outer core contains a percentage of oxygen or sulfur by weight that is inadequate for producing detectable immiscible layers.
- Global Identification of Human Transcribed Sequences with Genome Tiling Arrays
A comprehensive search for transcribed sequences from both strands of the entire human genome has identified known genes and thousands of potential new ones.
- Use of Logic Relationships to Decipher Protein Network Organization
Comparison of the co-occurrence of proteins among 67 sequenced genomes allows the construction of metabolic networks of interacting protein species.
- Reproductive Effort, Molting Latitude, and Feather Color in a Migratory Songbird
American redstarts that reproduce late in the season save energy by molting during migration and producing less colorful feathers.
- Dephosphorylation of the Calcium Pump Coupled to Counterion Occlusion
Phosphoryl transfers allow muscle fibers to function by controlling access to the ion (calcium) and counterion (proton) binding sites of the calcium pump.
- Mouse Brain Organization Revealed Through Direct Genome-Scale TF Expression Analysis
When and where 1457 transcription factors are expressed in the developing mouse brain reveals fundamental details of brain substructure.
- Activity-Dependent Internalization of Smoothened Mediated by ß-Arrestin 2 and GRK2
Two new members of a key pathway responsible for pattern formation during vertebrate development have been identified.
- Epithelial-to-Mesenchymal Transition Generates Proliferative Human Islet Precursor Cells
Cultured human insulin-secreting cells can be coaxed to become less differentiated and then to divide into insulin-producing cells that are potentially useful for treating diabetes.
- ß-Arrestin 2 Regulates Zebrafish Development Through the Hedgehog Signaling Pathway
In zebrafish, a versatile protein that is bound to numerous signaling complexes is found to mediate a key developmental signaling pathway.
- Role of the Kinase MST2 in Suppression of Apoptosis by the Proto-Oncogene Product Raf-1
RAF-1, a well-known protein often mutated in cancer, acts on another signaling enzyme to control cell proliferation and death in normal and cancerous cells.
- Enterococcus faecalis Senses Target Cells and in Response Expresses Cytolysin
When pathogenic bacteria attack, one member of a two-protein complex is bound by the target cells, releasing the other to induce the production of the bacterial toxin.
Technical Comments
