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:	S557
P-Site Sequence:	GDHPVANSLRVDVQA
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	S557	GDHPVANSLRVDVQA	100 / 9 AA	193
Phosphosite 1:	C4B	P0C0L5	S557	GDHPVANSLRVDVQA	100 / 9 AA	193
Phosphosite 2:	RLF	Q13129	S450	ENAPVPNSLRCELLL	66 / 9 AA	218
Phosphosite 3:	VASP	P50552	S46	YHNPTANSFRVVGRK	75 / 8 AA	40
Phosphosite 4:	TMEM79	Q9BSE2	S46	AESPGAESLRVGSSA	66 / 9 AA	44
Phosphosite 5:	Ets-2	P15036	S18	QVAPVANSYRGTLKR	85 / 7 AA	53
Phosphosite 6:	MYCBP2	O75592	S1638	VVLPVRNSLRRENEL	66 / 9 AA	510
Phosphosite 7:	C6orf146	Q8IXS0	S11	RNENCANSLRVSNIS	85 / 7 AA	57
Phosphosite 8:	PCM1	Q15154	S866	TASPVAVSLRSDGSE	77 / 9 AA	228
Phosphosite 9:	MAP2	P11137	S1387	DSIMDADSLWVDTQD	71 / 7 AA	200
Phosphosite 10:	CECR2	Q9BXF3	S141	LKGLDADSLRVEPLG	71 / 7 AA	164
Phosphosite 11:	DMRT1	Q9Y5R6	S256	GGSPVKNSLRGLPGP	85 / 7 AA	39
Phosphosite 12:	UNC13A	Q9UPW8	S943	LLDQLHNSLRIDLSM	83 / 6 AA	193
Phosphosite 13:	UNC13C	Q8NB66	S1489	LLDQLHNSLRIDLSK	83 / 6 AA	251
Phosphosite 14:	UNC13B	O14795	S867	LLDQLHNSLRIDLST	83 / 6 AA	181
Phosphosite 15:	EPB41L2	O43491	S614	LIEGKKNSLRVEGDN	83 / 6 AA	113
Phosphosite 16:	KLHL10	Q6JEL2	T506	AYSPVANTWRTIPTM	71 / 7 AA	69
Phosphosite 17:	Ig heavy chain V-III region GAL	P01781	S85	SLYLQMNSLRVEDTA	83 / 6 AA	13
Phosphosite 18:	C3	P01024	S550	QREVVADSVWVDVKD	62 / 8 AA	187
Phosphosite 19:	ANGPT4	Q9Y264	S377	LTRRAAYSLRVELQD	71 / 7 AA	57
Phosphosite 20:	C17orf100	A8MU93	S89	SRHVRASSLRVETSL	71 / 7 AA	18