MacKinnon has been working on understanding the functions of this channel since his postdoc. “BK is the first potassium channel I studied, so it is enormously satisfying to finally observe its ...

Image: Courtesy of Roderick MacKinnon MAPPING THE PATH: The transmembrane pore of K+ channels is composed of four identical subunits, of which two are shown. The ion pathway contains a narrow ...

Vitamin K and potassium are both essential micronutrients, but they're not the same. This article compares the two. ... Chemical structure: quinone lipid: soft metal: Daily Value (DV) 120 mcg: ...

Molecular dynamics simulations show how potassium passes through an ion channel at atomic resolution. Story by Carmen Rotte • 7m.