|Superclasses:||a macrocycle → a porphyrin → heme|
|an organometallic compound|
'heme' is usually understood as any tetrapyrrolic chelate of iron. The terms 'ferroheme' and 'ferriheme' refer to the Fe(II) and Fe(III) oxidation states in heme (even though Fe(IV) is found as a catalytic intermediate in some systems).
The term "heme d" has been used to describe the heme group of cytochromes d. However, the various alternative forms for hemes found in cytochromes d preclude such a simple classification.
Chemical Formula: C34H32N4O6Fe
Molecular Weight: 648.5 Daltons
Monoisotopic Molecular Weight: 650.1827769448 Daltons
Standard Gibbs Free Energy of Change Formation (ΔfG'° in kcal/mol): 229.26863 [Latendresse13]
In Reactions of unknown directionality:
Not in pathways:
heme b + hydrogen peroxide = heme d
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