出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2010/12/01 09:18 UTC 版)
Tetrapyrroles are compounds containing four pyrrole rings. With the exception of corrin, the four pyrrole rings are interconnected through one-carbon (methine or methylene) bridges, in either a linear or a cyclic fashion. Because of their ability to form metal complexes, these compounds are particularly important in biological systems.