metabolite
Any intermediate or product resulting from metabolism. The term 'metabolite' subsumes the classes commonly known as primary and secondary metabolites.
(via heme )
prosthetic group
A tightly bound, specific nonpolypeptide unit in a protein determining and involved in its biological activity.
(via heme )
cofactor
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).
(via porphyrins )
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{methyl 3-[(2RS,5'SR)-9',14'-diethenyl-5'-hydroxy-5',10',15',19'-tetramethyl-5-oxo-4,5-dihydro-3H-spiro[furan-2,4'-[21,22,23,24]tetraazapentacyclo[16.2.1.13,6.18,11.113,16]tetracosa[1,3(24),6,8,10,12,14,16(22),17,19]decaen]-20'-yl-κ4N21',N22',N23',N24']propanoatato(2−)}iron
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