Name	Info	Provider	Link
	subscription/membership/fee required	Atypon	https://journals.asm.org/doi/10.1128/JB.05567-11?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
fsrA	free resource	BioCyc	https://biocyc.org/gene?orgid=BSUB&id=G8J2-10
Iron	free resource	MedlinePlus Health Information	https://medlineplus.gov/iron.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22427629/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/22427629
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-200