Contents
Vol 311, Issue 5766
Special Issue
Cassini at Enceladus
Introduction to special issue
Perspectives
Research Articles
Reports
Contents
This Week in Science
Editorial
Editors' Choice
NetWatch
Products & Materials
News of the Week
ScienceScope
Random Samples
Newsmakers
News Focus
Letters
Books
Policy Forum
Perspectives
Brevia
- Diffusive Separation of the Lower Atmosphere
As long predicted, diffusion can overcome turbulence in the troposphere under specific conditions to separate heavy and light atoms and molecules.
Research Article
- Structure of the Hydrophilic Domain of Respiratory Complex I from Thermus thermophilus
The x-ray crystal structure of the peripheral part of the largest bacterial respiratory electron-transport complex shows the folds, contacts, and positions of the redox cofactors.
Reports
- Ultrafast Interfacial Proton-Coupled Electron Transfer
Return of an electron from a methanol film to a semiconductor induces rapid (30 femtoseconds) stabilizing motion in the substrate and coupled transfer of a proton.
- Signatures of H2CO Photodissociation from Two Electronic States
Spectroscopy and computations reveal the nuclear vibrations and other motions involved in the dissociations of excited, transient molecules and in collision reactions.
- Late Precambrian Oxygenation; Inception of the Clay Mineral Factory
The development of an oxygen-rich atmosphere during the Neoproterozoic was the result of an increase in the rate of clay deposition caused by the spread of terrestrial vegetation.
- The Last Deglaciation of the Southeastern Sector of the Scandinavian Ice Sheet
Dating of glacial deposits near the margins of the Scandinavian Ice Sheet reveals that it began to retreat about 19,000 years ago, contributing to an abrupt rise in sea level.
- Exposed Water Ice Deposits on the Surface of Comet 9P/Tempel 1
Deep Impact has found three patches of water ice on comet Tempel 1, but these cannot account for the water output of outgassing, implying a subsurface source.
- Laonastes and the "Lazarus Effect" in Recent Mammals
A recently discovered living rodent is a survivor of a family thought to have been extinct for 11 million years.
- Opposing Effects of Native and Exotic Herbivores on Plant Invasions
A meta-analysis of 71 experimental studies shows that invasions by exotic plants tend to be suppressed by native herbivores but enhanced by exotic herbivores.
- A Major Ecosystem Shift in the Northern Bering Sea
Warming has caused the highly productive northern part of the Bering Sea to change from an arctic to a subarctic marine ecosystem.
- Structure and Mechanism of the Lantibiotic Cyclase Involved in Nisin Biosynthesis
The enzyme that performs the final step in the biosynthesis of the antimicrobial food preservative nisin constructs five thioether rings of different sizes in this peptide.
- Engineering Cooperativity in Biomotor-Protein Assemblies
Artificial assembly of kinesin proteins on scaffold molecules shows that their transport activity is enhanced by their proximity.
- Progressive Disruption of Cellular Protein Folding in Models of Polyglutamine Diseases
In experiments in nematodes that may simulate some neurodegenerative diseases, abnormal, glutamine-rich proteins disrupt the cell’s normal disposal of misfolded proteins.
- The Global Impact of Scaling Up HIV/AIDS Prevention Programs in Low- and Middle-Income Countries
Implementation of AIDS prevention measures targeting sexual transmission and drug users could prevent 30 million new infections in the next 10 years.
- Combinatorial Effects of Odorant Mixes in Olfactory Cortex
Specific neurons in the olfactory cortex act as coincidence detectors, responding to a mixture of two odors but not to the individual components of the mixture.
- Genome-Wide Prediction of C. elegans Genetic Interactions
Construction of a comprehensive gene interaction network for C. elegans, guided by data from yeast and fruit flies, identifies previously undescribed interacting protein pairs.
