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:	C4A
Human P-Site:	Y609
P-Site Sequence:	GALDTALYAAGSKSH
UniProt:	P0C0L4
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4A	P0C0L4	Y609	GALDTALYAAGSKSH	100 / 9 AA	193
Phosphosite 1:	C4B	P0C0L5	Y609	GALDTALYAAGSKSH	100 / 9 AA	193
Phosphosite 2:	Putative protein FAM86B-like 1	A6NIG7	Y125	VTWDTALYLAEWAEN	66 / 9 AA	33
Phosphosite 3:	STRAP	Q9Y3F4	Y280	FSPDGELYASGSEDG	66 / 9 AA	38
Phosphosite 4:	TAF5L	O75529	Y210	KRTDYQLYASGSSSR	66 / 9 AA	66
Phosphosite 5:	SETD1A	O15047	Y227	SSSDTAAYPAGTTAV	66 / 9 AA	186
Phosphosite 6:	ZNF512	Q96ME7	Y150	IRKEPPVYAAGSLEE	55 / 9 AA	65
Phosphosite 7:	ATP5O	P48047	S47	RYATALYSAASKQNK	75 / 8 AA	23
Phosphosite 8:	ATP5O	P48047	Y46	GRYATALYSAASKQN	75 / 8 AA	23
Phosphosite 9:	LSR	Q86X29	Y309	CCCPEALYAAGKAAT	100 / 6 AA	71
Phosphosite 10:	DCAF12L2	Q5VW00	Y321	YCDELSLYAVGSQSH	55 / 9 AA	51
Phosphosite 11:	TSC2	P49815	T1247	RFKEHRDTALYKSLS	100 / 5 AA	201
Phosphosite 12:	BEGAIN	Q9BUH8	Y234	YCSDTALYCPEERRR	62 / 8 AA	65
Phosphosite 13:	TSC2	P49815	Y1250	EHRDTALYKSLSVPA	100 / 5 AA	201
Phosphosite 14:	EFCAB7	A8K855	Y329	LSVDTALYILKENES	100 / 5 AA	72
Phosphosite 15:	DIP2A	Q14689	Y1453	GGRHDALYVVGSLDE	71 / 7 AA	170
Phosphosite 16:	TLN2	Q9Y4G6	T642	EPRQTVLTAAGSIGQ	66 / 9 AA	272
Phosphosite 17:	TAS2R8	Q9NYW2	Y218	HTKQIKLYATGSRDP	83 / 6 AA	36
Phosphosite 18:	Ig heavy chain V-III region GAL	P01781	T91	NSLRVEDTALYYCAR	100 / 5 AA	13
Phosphosite 19:	MUC5AC	P98088	Y4167	CNVADRLYPAGSTIY	83 / 6 AA	527
Phosphosite 20:	TAS2R8	Q9NYW2	T220	KQIKLYATGSRDPST	83 / 6 AA	36