Proceedings of the National Academy of Sciences current issueProceedings of the National Academy of Sciences RSS feed -- current issuePlant_Biology From the Cover: A triallelic system of S5 is a major regulator of the reproductive barrier and compatibility of indica-japonica hybrids- August 12, 2008 <p>Hybrid sterility is a major form of postzygotic reproductive isolation. Although reproductive isolation has been a key issue in evolutionary...http://www.pnas.org/cgi/content/short/105/32/11436?rss=1 Applied_Physical_Sciences Experimental quantum coding against qubit loss error- August 12, 2008 <p>The fundamental unit for quantum computing is the qubit, an isolated, controllable two-level system. However, for many proposed quantum computer...http://www.pnas.org/cgi/content/short/105/32/11050?rss=1 Neuroscience Delivery of AMPA receptors to perisynaptic sites precedes the full expression of long-term potentiation- August 12, 2008 <p>Trafficking of AMPA subtype glutamate receptors (AMPARs) from intracellular compartments to synapses is thought to be a major mechanism underlying...http://www.pnas.org/cgi/content/short/105/32/11388?rss=1 Perspective Aminoacyl tRNA synthetases and their connections to disease- August 12, 2008 <p>Aminoacylation of transfer RNAs establishes the rules of the genetic code. The reactions are catalyzed by an ancient group of...http://www.pnas.org/cgi/content/short/105/32/11043?rss=1 Microbiology Architecture and inherent robustness of a bacterial cell-cycle control system- August 12, 2008 A closed-loop control system drives progression of the coupled stalked and swarmer cell cycles of the bacterium Caulobacter crescentus in...http://www.pnas.org/cgi/content/short/105/32/11340?rss=1 Commentary PINK1 in mitochondrial function- August 12, 2008http://www.pnas.org/cgi/content/short/105/32/11041?rss=1 Medical_Sciences Impact of enhanced tuberculosis diagnosis in South Africa: A mathematical model of expanded culture and drug susceptibility testing- August 12, 2008 <p>South Africa has high rates of tuberculosis (TB), including multidrug-resistant (MDR) and extensively drug-resistant (XDR) strains. Expanding access to culture...http://www.pnas.org/cgi/content/short/105/32/11293?rss=1 Commentary Phosphorus control is critical to mitigating eutrophication- August 12, 2008http://www.pnas.org/cgi/content/short/105/32/11039?rss=1 Ecology Hydraulic integration and shrub growth form linked across continental aridity gradients- August 12, 2008 <p>Both engineered hydraulic systems and plant hydraulic systems are protected against failure by resistance, reparability, and redundancy. A basic rule...http://www.pnas.org/cgi/content/short/105/32/11248?rss=1 Commentary Vitamin C and cancer revisited- August 12, 2008http://www.pnas.org/cgi/content/short/105/32/11037?rss=1 |