Contents
Vol 313, Issue 5787
Contents
This Week in Science
Editorial
Editors' Choice
NetWatch
Departments
Products & Materials
News of the Week
ScienceScope
Random Samples
Newsmakers
News Focus
Letters
Books
Policy Forum
Perspectives
Review
Brevia
- Fibrin Fibers Have Extraordinary Extensibility and Elasticity
The fibrin fibers that support blood clots can be stretched to nearly three times their normal length without losing elasticity and up to six times before rupturing.
Research Articles
- Spitzer Spectral Observations of the Deep Impact Ejecta
The nucleus of comet Tempel 1 is made of minerals and organic compounds from throughout the protosolar nebula.
- Netrins Promote Developmental and Therapeutic Angiogenesis
The netrins, developmental factors that guide axons as they find their targets, also direct the formation of new blood vessels.
- The Neurospora Checkpoint Kinase 2: A Regulatory Link Between the Circadian and Cell Cycles
A fungal ortholog of a key regulator for the mammalian cell cycle links cell division with the circadian cycle, gating the ability of DNA damage to reset the clock.
Reports
- Imaging the Mott Insulator Shells by Using Atomic Clock Shifts
High-resolution spectroscopy reveals the layered electron band structure that produces an insulating, instead of conducting, cloud of cold rubidium atoms.
- Evidence for a Past High-Eccentricity Lunar Orbit
The equatorial bulge of the Moon implies that it was in a highly eccentric orbit close to Earth soon after its formation and during its solidification.
- Smoke and Pollution Aerosol Effect on Cloud Cover
A higher concentration of aerosol particles increases cloudiness, but this effect is offset by the amount of sunlight absorbed by the clouds.
- Crustal Dilatation Observed by GRACE After the 2004 Sumatra-Andaman Earthquake
Changes in Earth’s gravity after the 2004 Sumatra-Andaman earthquake reveal that the quake compressed and extended the local crust and mantle, changing their densities.
- Synthesis of Biaryls via Catalytic Decarboxylative Coupling
A copper catalyst in tandem with palladium can generate useful biaryl compounds from benign carboxylates rather than hazardous organometallics.
- Gender Differences in Patenting in the Academic Life Sciences
A longitudinal study shows that women scientists have patented their findings at less than half the rate of men, perhaps because of fewer collaborations and industrial contacts.
- Regulation of Sexual Development of Plasmodium by Translational Repression
An essential RNA helicase sequesters mRNAs in the developing malaria parasite until they are needed, presenting a likely target for therapeutics.
- Anti-Inflammatory Activity of Immunoglobulin G Resulting from Fc Sialylation
Inflammatory antibodies can be converted to potentially useful anti-inflammatory agents by altering their attached sugar residues.
- N- to C-Terminal SNARE Complex Assembly Promotes Rapid Membrane Fusion
A preassembled complex of fusion proteins can fuse membranes in vitro as rapidly as is observed during secretion in intact neurons.
- A Clamping Mechanism Involved in SNARE-Dependent Exocytosis
The protein complexin prevents synaptic vesicles from fusing until calcium is sensed by another protein, synaptotagmin, to initiate fusion.
- Anaphase Inactivation of the Spindle Checkpoint
The system that ensures that all chromosomes are properly attached to the spindle poles during cell division is later inactivated by the interaction of two proteins.
- Frames, Biases, and Rational Decision-Making in the Human Brain
The framing effect—in which the way a question is posed alters the answer—is a result of biases arising in the amygdala, a brain region involved with emotion.
Technical Comments
