Siroheme

Siroheme (or sirohaem) is a heme-like prosthetic group used by some enzymes to accomplish the six-electron reduction of sulfur and nitrogen. Siroheme is synthesized from uroporphyrinogen III, a heme and vitamin B₁₂ precursor. It plays a major role in the sulfur assimilation pathway: converting sulfite to a biologically useful sulfide, which can be incorporated into the organic compound homocysteine.

单词	Siroheme
释义	Siroheme 英语百科 Siroheme Siroheme (or sirohaem) is a heme-like prosthetic group used by some enzymes to accomplish the six-electron reduction of sulfur and nitrogen. Siroheme is synthesized from uroporphyrinogen III, a heme and vitamin B₁₂ precursor. It plays a major role in the sulfur assimilation pathway: converting sulfite to a biologically useful sulfide, which can be incorporated into the organic compound homocysteine.
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