Noun: protoheme
- A complex red organic pigment containing iron and other atoms to which oxygen binds
"protoheme is a crucial component of haemoglobin";
- heme [N. Amer], haem [Brit, Cdn], hematin [N. Amer], haematin [Brit, Cdn]
Type of: pigment
Part of: cytochrome, haemoglobin [Brit, Cdn], Hb, hemoglobin [N. Amer], myoglobin
Encyclopedia: Protoheme