Every second, hundreds to thousands of molecules move through thousands of nuclear pores in each of your cells. A new high-definition view reveals the machine in action.

Mitochondrial Complex I (NADH:ubiquinone oxidoreductase) is the largest enzyme complex of the respiratory chain, essential for cellular energy production. This multiprotein assembly couples the ...

Two new papers describe a significant advance in understanding the complex functions of the metabolic network. Two papers published today in the journal Nature describe a significant advance in ...

Cyanobacteria began contributing oxygen to Earth's mostly noxious atmosphere more than 2 billion years ago. The photosystem II protein complex now shared by various lineages of cyanobacteria, algae ...