An organic molecule or ion (usually a metal ion) that is required by an enzyme for its activity. It may be attached either loosely (coenzyme) or tightly (prosthetic group).
Fe4S2O2 iron-sulfur-oxygen cluster
(CHEBI:60519)
has role
cofactor
(CHEBI:23357)
Fe4S2O2 iron-sulfur-oxygen cluster
(CHEBI:60519)
is a
metal-sulfur-oxygen cluster
(CHEBI:60905)