Name	Info	Provider	Link
	free resource	Institute for Transcriptional Informatics	http://www.ifti.org/cgi-bin/ifti/sitesSummary.pl?requestType=linkout&key=2657402
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/2657402/
	subscription/membership/fee required	Taylor & Francis	https://www.tandfonline.com/doi/full/10.1128/mcb.9.4.1682-1690.1989
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/2657402