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:	S372
P-Site Sequence:	SPFSLDLSKTKRHLV
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	S372	SPFSLDLSKTKRHLV	100 / 9 AA	193
Phosphosite 1:	C4B	P0C0L5	S372	SPFSLDLSKTKRHLV	100 / 9 AA	193
Phosphosite 2:	C4B	P0C0L5	T374	FSLDLSKTKRHLVPG	100 / 7 AA	193
Phosphosite 3:	C4A	P0C0L4	T374	FSLDLSKTKRHLVPG	100 / 7 AA	193
Phosphosite 4:	PSG3	Q16557	S196	MTHSLQLSKNKRTLF	77 / 9 AA	48
Phosphosite 5:	PPIL5	Q96L50	S234	SLRSLDLSKNKIKAL	87 / 8 AA	47
Phosphosite 6:	PSG6	Q00889	S195	MTHRLQLSKTNRTLY	75 / 8 AA	49
Phosphosite 7:	PSG4	Q00888	S196	MTHRLQLSKTNRTLF	75 / 8 AA	47
Phosphosite 8:	PSG9	Q00887	S196	VTHRLQLSKTNRTLY	75 / 8 AA	48
Phosphosite 9:	RPP38	P78345	S240	DTSFEDLSKPKRKLA	85 / 7 AA	32
Phosphosite 10:	factor V	P12259	S1254	TTLSLDLSQTNLSPE	75 / 8 AA	252
Phosphosite 11:	RAD52	P43351	T189	LPLEVDLTKAKRQDL	62 / 8 AA	46
Phosphosite 12:	piccolo	Q9Y6V0	T4007	HEKDLSKTDRLLRTT	85 / 7 AA	567
Phosphosite 13:	piccolo	Q9Y6V0	S4005	SLHEKDLSKTDRLLR	85 / 7 AA	567
Phosphosite 14:	PRDX4	Q13162	S77	ADHSLHLSKAKISKP	75 / 8 AA	31
Phosphosite 15:	Polycystin 2	Q13563	S396	AGYYLDLSRTREETA	71 / 7 AA	110
Phosphosite 16:	RUVBL2	Q9Y230	S114	EIFSLEMSKTEALTQ	71 / 7 AA	51
Phosphosite 17:	ZNF311	Q5JNZ3	S431	FSRSSDLSKHKRIHT	77 / 9 AA	76
Phosphosite 18:	SLC25A27	O95847	T43	ATFPLDLTKTRLQMQ	62 / 8 AA	36
Phosphosite 19:	FAM123B	Q5JTC6	S1110	GPSSLDLSKERAEQG	75 / 8 AA	124
Phosphosite 20:	CCDC102A	Q96A19	T300	KYEELSKTKQEMLKQ	71 / 7 AA	63