Name	Info	Provider	Link
cheB	free resource	BioCyc	https://biocyc.org/gene?orgid=BSUB&id=BSU16420
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=12123464.ui
	free resource	Wiley	https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0950-382X&date=2002&volume=45&issue=2&spage=555