Researchers describe, for the first time, the structure of a smell-receptor protein common among insects. Its inner architecture illuminates how insects evolved to detect an amazing diversity of odors.
Scientists describe a group of proteins that protect cells from a subtype of human papilloma virus. They also outline genetic mutations that make this virus unusually harmful in people with epidermodysplasia verruciformis, a rare skin condition.
Researchers find that a deficiency of acetyl-L-carnitine is associated with a particular subtype of depression. Individuals with very low levels of this molecule often have highly severe symptoms and don’t respond to traditional antidepressants.