Latest Proceedings of the National Academy of Sciences Stories
Each time a human cell divides, it must first make a copy of its 46 chromosomes to serve as an instruction manual for the new cell.
A new study led by scientists at the University of Pennsylvania School of Veterinary Medicine has painted a clearer picture of the delicate arms race between the human immune system and a pathogen that seeks to infect and kill human cells.
Populations of predators and their prey usually follow predictable cycles.
Johns Hopkins biochemists have figured out what is needed to activate and sustain the virus-fighting activity of an enzyme found in CD4+ T cells, the human immune cells infected by HIV.
New research from scientists at the University of Massachusetts Medical School shows that fruit flies are secretly harboring the biochemistry needed to glow in the dark —otherwise known as bioluminescence.
From time to time, living cells will accidentally make an extra copy of a gene during the normal replication process.
Researchers have discovered a way of reducing the fertility of malaria-carrying mosquitoes, potentially providing a new tactic to combat the disease.
Melbourne researchers have solved a puzzle as to how an essential blood-making hormone stimulates production of the blood clotting cells known as platelets.
Scientists have for the first time come closer to understanding how a clone of E. coli, described as the most important of its kind to cause human infections, has spread across the world in a very short time.
The code for every gene includes a message at the end of it that signals the translation machinery to stop.
The Proceedings of the National Academy of Sciences of the United States of America (PNAS) is a peer-reviewed scientific journal established in 1914 as the official journal of the US National Academy of Sciences. The first managing editor of the journal was mathematician Edwin Bidwell Wilson. As of May 2012, the editor-in-chief is Inder M. Verma. PNAS is published weekly in print, and daily online in PNAS Early Edition. The first issue of PNAS was published in 1915, and the journal...