Researchers described for the first time the structure of a bifunctional protein, called CcsBA, that transports heme and attaches it to cytochromes. The study captured two conformational states of ...

Iron is essential for oxygen transport and energy metabolism, yet both deficiency and excess are linked to cardiovascular ...

A new study reveals that a peptide produced by some legumes helps them control nitrogen-fixing bacteria by sequestering all available heme, an iron-containing molecule. This sends the bacteria into an ...

Heme is an essential part of the protein hemoglobin, which colors human blood red. Heme also is crucial for cytochrome proteins, which power the cell. Humans, animals, plants and bacteria all use heme ...