membrane proteins
Plant RNAs Found in Mammals
Cristina Luiggi | Sep 20, 2011
MicroRNAs from plants accumulate in mammalian blood and tissues, where they can regulate gene expression.
How Vampire Bats Find Veins
Jessica P. Johnson | Aug 4, 2011
Heat-sensing protein channels in vampire bats allow the flying mammals to find the best place to sink their teeth into their prey.
String Theory
Richard P. Grant | Aug 1, 2011
New types of biological filaments are turning up in yeast, fly, bacterial cells and in rat neurons, and they may yield clues to how the cytoskeleton evolved from metabolically active enzymes.
The Birth of Optogenetics
Edward S. Boyden | Jul 1, 2011
An account of the path to realizing tools for controlling brain circuits with light.
OPSINS: Tools of the trade
OPSINS: Tools of the trade
Edward S. Boyden | Jul 1, 2011
The optogenetic toolset is composed of genetically encoded molecules that, when targeted to specific neurons in the brain, enable the electrical activity of those neurons to be driven or silenced by light. 
Smashing Crystals
Smashing Crystals
Richard P. Grant | Jul 1, 2011
A powerful new X-ray–generating laser is imaging smaller crystals than ever before.
Optogenetics: A Light Switch for Neurons
Edward S. Boyden | Jul 1, 2011
This animation illustrates optogenetics—a radical new technology for controlling brain activity with light. 
Meet the Crystal Smasher
The Scientist Staff | Jul 1, 2011
Take a tour of the Linac Coherent Light Source (LCLS), whose ultra-powerful X-ray beam is being used to solve the structures of proteins that are notoriously hard to crystallize.
Smashing Crystals
The Scientist Staff | Jul 1, 2011
A powerful new X-ray–generating laser is imaging smaller crystals than ever before.
Scientist to Watch
Alison McCook | Jul 1, 2011
“This is my trophy,” says biologist Michael Edidin, walking across his office at Johns Hopkins University to pick up two oversized clock hands, once part of the stately clock tower that still stands on the Baltimore campus.