News tagged with cellular structures

Structure of RNAi complex now crystal clear

Researchers at the Whitehead Institute and Memorial Sloan-Kettering Cancer Center have defined and analyzed the crystal structure of a yeast Argonaute protein bound to RNA. This complex plays a key role in the RNA interference ...

Jun 20, 2012
5 / 5 (1) 0 | with audio podcast

Seeking HIV treatment clues in the neem tree

Tall, with dark-green pointy leaves, the neem tree of India is known as the "village pharmacy." As a child growing up in metropolitan New Delhi, Sonia Arora recalls on visits to rural areas seeing villagers using neem bark ...

Apr 23, 2012
3.8 / 5 (4) 0

Another piece of the ion pump puzzle

From bacteria to humans, all cells use molecules of adenosine triphosphate (ATP) as fuel to power a broad range of biochemical reactions. For example, massive multi-subunit enzymes known as V-ATPases convert ...

Mar 16, 2012
5 / 5 (3) 0

No more free rides for 'piggy-backing' viruses

Scientists have determined the structure of the enzyme endomannosidase, significantly advancing our understanding of how a group of devastating human viruses including HIV and Hepatitis C hijack human enzymes to reproduce ...

Jan 04, 2012
4 / 5 (1) 0 | with audio podcast

Helium raises resolution of whole cell imaging

The ability to obtain an accurate three-dimensional image of an intact cell is critical for unraveling the mysteries of cellular structure and function. However, for many years, tiny structures buried deep inside cells have ...

Oct 03, 2011
5 / 5 (1) 1