Name	Info	Provider	Link
hemO	free resource	BioCyc	https://biocyc.org/gene?orgid=META&id=G-54983
Iron	free resource	MedlinePlus Health Information	https://medlineplus.gov/iron.html
	subscription/membership/fee required	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0950-382X&date=1995&volume=15&issue=3&spage=531
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:7783623