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).
tetra-μ3-sulfido-tetrairon(0)
(CHEBI:33725)
is a
tetra-μ3-sulfido-tetrairon
(CHEBI:49883)
tetra-μ3-sulfido-tetrairon(1+)
(CHEBI:33723)
is a
tetra-μ3-sulfido-tetrairon
(CHEBI:49883)
tetra-μ3-sulfido-tetrairon(2+)
(CHEBI:33722)
is a
tetra-μ3-sulfido-tetrairon
(CHEBI:49883)
tetra-μ3-sulfido-tetrairon(3+)
(CHEBI:33724)
is a
tetra-μ3-sulfido-tetrairon
(CHEBI:49883)
tetrakis-L-cysteinyl tetrairon tetrasulfide
(CHEBI:26930)
is a
tetra-μ3-sulfido-tetrairon
(CHEBI:49883)