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 ...

Heme degradation plays important biological roles, ranging from generating light-absorbing compounds in plants to facilitating iron homeostasis in mammals. The X-ray crystal structure of human heme ...

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 ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 95, No. 26 (Dec. 22, 1998), pp. 15177-15182 (6 pages) The FixL proteins are biological oxygen sensors that ...

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 ...