補ほ欠けつ分ぶん子し族ぞく

noun

prosthetic group

A non-protein component tightly bound to a protein and essential for its biological activity; a technical term in biochemistry.

• ヘモグロビンのヘムは補ほ欠けつ分ぶん子し族ぞくの一いち例れいである。

  The heme in hemoglobin is an example of a prosthetic group.