释义 |
heme \ˈhēm\ noun also hem \ˈhem\; or haem \ˈhēm, ˈhem\ (-s) Etymology: International Scientific Vocabulary, from hematin 1. : a deep red iron-containing pigment C34H32N4O4Fe that is obtained from hemoglobin by treatment with acid to remove the globin, that is a ferrous derivative of protoporphyrin, and that readily oxidizes to hematin or hemin — called also ferroprotoporphyrin, protoheme, reduced hematin 2. : any of several compounds that are derived from protoporphyrin and iron in either the ferrous or ferric state and that constitute the nonprotein groups of some hemoproteins — compare hematin 2c, hemin 2 |