Clade C es el subtipo más prevalente de HIV-1 en el mundo. La estructura cristalina del núcleo de clade C gp120 es descrito por Bjorkman y colegas, en conjunto con el complejo CD4 y el receptor CD4 - inducidos por anticuerpo. El trabajo revela que el anticuerpo hace contacto con ambos, gp120 y CD4. La portada de la revista muestra una escultura de vidrio de una partícula viral realizada por el artistaLuke Jerram (http://www.lukejerram.com/projects/glass_microbiology).pp 608–613
M51 — The Whirlpool Galaxy © Martin Pugh
In a whirl. Pugh's grand prize-winning entry (which also won the "Deep Space" category) shows the Whirlpool galaxy's spiral arms in sharp detail; trails of light show a smaller, neighboring galaxy being slowly torn apart by the Whirlpool's gravitational pull.
M51—also known as the Whirlpool galaxy—is a classic spiral galaxy that scientists have studied for centuries. But this mesmerizing new image of the galaxy has nabbed Australian photographer Martin Pugh the top prize in the fourth annual Astronomy Photographer of the Year awards, announced this week. The sharp detail of the spiral’s arms, defined by dark, dusty areas and bright, pink clouds of hydrogen, impressed the judges. “This is arguably one of the finest images of M51 ever taken by an amateur astronomer,” said judge and astronomer Will Gater in a press release. Pugh’s photograph—which was chosen from more than 800 entries from around the world and earned him £1500—as well as those of the winners in categories such as ”Young Astronomy Photographer of the Year,” “Earth and Space,” and “Our Solar System,” are now on display at the Royal Observatory Greenwich in the United Kingdom. Other standout entries include a photograph of the Pleiades cluster, taken by a 15-year-old astronomer, and an image of this year’s transit of Venus across the sun, which was taken on 6 June.
on 20 September 2012, 1:55 PM