Name	Info	Provider	Link
PhosphoSitePlus® - comprehensive post-translational modification resource	free resource	PhosphoSitePlus	https://www.phosphosite.org/referenceSearchSubmitAction.action?from=0&queryId=-1&pubMedIds=15115728
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/biolreprod/article-lookup/doi/10.1095/biolreprod.104.027466