Note - Blast analyses are based on comparisons of the phosphosites and the bordering four amino acids on each side of these phosphosites.

Phosphosite
Human Protein:	C1s
Human P-Site:	Y557
P-Site Sequence:	LPGTSSDYNLMDGDL
UniProt:	P09871
Intern. Prot. ID:	IPI00017696

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C1s	P09871	Y557	LPGTSSDYNLMDGDL	100 / 9 AA	77
Phosphosite 1:	C1s	P09871	S555	ICLPGTSSDYNLMDG	100 / 7 AA	77
Phosphosite 2:	TTLL5	Q6EMB2	Y96	VHPSSTDYNLMWTGS	75 / 8 AA	143
Phosphosite 3:	BLoc1S2	Q6QNY1	Y63	LTATSEDYKLLENMN	55 / 9 AA	16
Phosphosite 4:	CASC5	Q8NG31	Y2253	LKRWGPNYNLMNIDI	50 / 8 AA	265
Phosphosite 5:	TrpC6	Q9Y210	Y31	RRNESQDYLLMDSEL	75 / 8 AA	106
Phosphosite 6:	GATSL3	Q8WTX7	Y51	LTETPEDYTLMVDEE	62 / 8 AA	36
Phosphosite 7:	TRIM28	Q13263	Y517	PGSTTEDYNLIVIER	62 / 8 AA	89
Phosphosite 8:	PPP1R2P9	O14990	Y63	HRATYRDYDLMKANE	62 / 8 AA	23
Phosphosite 9:	C1s	P09871	S554	PICLPGTSSDYNLMD	100 / 6 AA	77
Phosphosite 10:	C10orf12	Q8N655	T730	PKRLTSSTYNLRHAH	75 / 8 AA	137
Phosphosite 11:	C10orf12	Q8N655	S729	RPKRLTSSTYNLRHA	85 / 7 AA	137
Phosphosite 12:	KIAA2022	Q5QGS0	Y1490	EKLRDSDYNLLKAET	83 / 6 AA	168
Phosphosite 13:	JAK3	P52333	Y785	NSLISSDYELLSDPT	62 / 8 AA	125
Phosphosite 14:	KDM1	O60341	Y773	AGSSGNDYDLMAQPI	50 / 8 AA	93
Phosphosite 15:	SERPINA3	P01011	Y322	KFSISRDYNLNDILL	66 / 9 AA	48
Phosphosite 16:	piccolo	Q9Y6V0	Y2483	NLVTSADYKLPSPTS	71 / 7 AA	567
Phosphosite 17:	LRRC7	Q96NW7	S1233	ALLEKIPSDYNLGNY	71 / 7 AA	173
Phosphosite 18:	TLE2	Q04725	Y235	SDEDKSDYNLVVDED	83 / 6 AA	80
Phosphosite 19:	PTX3	P26022	Y23	LAENSDDYDLMYVNL	71 / 7 AA	42
Phosphosite 20:	KLHL18	O94889	Y263	LVDEAKDYHLMPERR	57 / 7 AA	64