Contents
Vol 309, Issue 5733
Special Issue
The Trypanosomatid Genomes
Introduction to special issue
Viewpoint
Research Articles
Contents
This Week in Science
Editorial
Editors' Choice
NetWatch
Products & Materials
News of the Week
ScienceScope
Random Samples
News Focus
Letters
Books
Policy Forum
Perspectives
Brevia
- Arctic Seabirds Transport Marine-Derived Contaminants
Pollutants such as DDT and mercury ultimately find their way to Arctic ponds through deposition of contaminated guano by seabirds.
Research Article
- Evidence for Ectopic Neurotransmission at a Neuronal Synapse
Monte Carlo simulations model a synapse and its surroundings, predicting that transmitter release occurs outside the synapse itself.
Reports
- The First Chemical Enrichment in the Universe and the Formation of Hyper Metal-Poor Stars
A computer model of star evolution shows that stars containing very little metal are not a primitive class but instead formed from the debris of older supernovae.
- Controlled Single-Photon Emission from a Single Trapped Two-Level Atom
Excitation of a single, optically trapped rubidium atom provides an on-demand source of identical single photons.
- Structural Relaxation of Polymer Glasses at Surfaces, Interfaces, and In Between
Glassy polymers show greatly reduced physical aging near surfaces and interfaces, probably altering their long-term behavior in thin films.
- Simulations of a Quasi–Taylor State Geomagnetic Field Including Polarity Reversals on the Earth Simulator
A model of convection in Earth's liquid outer core successfully simulates the lack of axial magnetic torque and produces reversals in the magnetic pole.
- Earthquake Source Fault Beneath Tokyo
The major plate boundary fault that underlies Tokyo is at a much shallower depth than has been thought, portending a much greater seismic hazard.
- Heat Flux Anomalies in Antarctica Revealed by Satellite Magnetic Data
Satellite magnetic data map the geothermal heat flux beneath the Antarctic ice sheet and show that heat flow is high beneath some ice streams and may threaten stability.
- RNA Polymerase II Is Required for RNAi-Dependent Heterochromatin Assembly
RNA polymerase II is required for silencing the chromosome regions around the centromere of fission yeast, a process directed by small RNAs transcribed from this region.
- Apolipoprotein L-I Promotes Trypanosome Lysis by Forming Pores in Lysosomal Membranes
A protein in human blood kills African trypanosomes by forming pores in the membrane of the parasite's lysosomes.
- The Trypanosoma cruzi Proteome
Proteome analysis of T. cruzi,which causes Chagas' disease, indicates that the individual stages of the parasite rely on different sources of energy.
- Tau Suppression in a Neurodegenerative Mouse Model Improves Memory Function
The cognitive decline seen in mice overexpressing a neurodegeneration-associated protein can be reversed by suppression of the transgene.
- Mitochondrial DNA Mutations, Oxidative Stress, and Apoptosis in Mammalian Aging
Mitochondrial mutations, which accumulate with age, increase the propensity of cells to undergo apoptosis.
- Chromatic Adaptation of Photosynthetic Membranes
Proteins in photosynthetic membranes assemble in paracrystalline, light-harvesting domains that enlarge at low light levels.
- Shared Cortical Anatomy for Motor Awareness and Motor Control
Patients unaware of their limb paralysis have lesions in movement-related brain areas, suggesting that the neural substrate for awareness overlaps that for movement.
- Distinct Kinetic Changes in Neurotransmitter Release After SNARE Protein Cleavage
Toxins that cleave three different subunits of the vesicular fusion machinery reveal the detailed kinetics of synaptic vesicle release.
