. 2014 Jan 16;10(1):e1003435. doi: 10.1371/journal.pcbi.1003435

Table 2. Relative levels of phosphorylation of individual EGFR P-sites.

	P-site
	992	1045	1068	1086	1101	1114	1148	1173	Citation
in vitro study			+++				+++	+++	[57]
			+++^*	+++			+++^*	+++^*	[58]
			+++^*	++			+++^*	+++^*	[5]
	+	++^*	+++^*	+++^*			+++^*	+++^*	[59]
cultured cell study			++				++	+++	[57]
	−	+	+++	+++		+++	+++	+++	[35]
	NA	+++	+++	NA	NA	NA	+++	+^**	[44]
	+++	++	+	++			+	+++	[34]

A survey of studies of EGFR phosphorylation site usage indicating relative phosphorylation of individual P-sites on a scale from +, ++ to +++ (−, phosphorylation negligible or not resolvable; NA, not analyzed).

implied in the cited study.

greatly enhanced by HER2 expression.