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:	C4B
Human P-Site:	S228
P-Site Sequence:	DGLESNSSTQFEVKK
UniProt:	P0C0L5
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4B	P0C0L5	S228	DGLESNSSTQFEVKK	100 / 9 AA	193
Phosphosite 1:	C4A	P0C0L4	S228	DGLESNSSTQFEVKK	100 / 9 AA	193
Phosphosite 2:	C4B	P0C0L5	T229	GLESNSSTQFEVKKY	100 / 8 AA	193
Phosphosite 3:	C4A	P0C0L4	T229	GLESNSSTQFEVKKY	100 / 8 AA	193
Phosphosite 4:	C4B	P0C0L5	S227	SDGLESNSSTQFEVK	100 / 8 AA	193
Phosphosite 5:	C4A	P0C0L4	S227	SDGLESNSSTQFEVK	100 / 8 AA	193
Phosphosite 6:	GPR175	Q86W33	S335	ASAASYSSTQFDSAG	66 / 9 AA	41
Phosphosite 7:	GPR175	Q86W33	T336	SAASYSSTQFDSAGG	75 / 8 AA	41
Phosphosite 8:	KCTD3	Q9Y597	S629	HLRESNSSLQLQHHD	66 / 9 AA	89
Phosphosite 9:	KIAA1009	Q5TB80	S160	KELDSNDSTHFKALH	62 / 8 AA	162
Phosphosite 10:	SLC5A11	Q8WWX8	S592	PEASSSSSVQFEMVQ	75 / 8 AA	74
Phosphosite 11:	ZBTB44	Q8NCP5	S554	HGFESNSSVQMPVIS	75 / 8 AA	64
Phosphosite 12:	SHF	Q7M4L6	S321	EPSLEDSSAQFEGPE	71 / 7 AA	53
Phosphosite 13:	PDIA1	P07237	S168	FKDVESDSAKQFLQA	62 / 8 AA	57
Phosphosite 14:	BRCA2	P51587	S1179	SIGQVDSSKQFEGTV	71 / 7 AA	384
Phosphosite 15:	ERAP1	Q9NZ08	S179	GELRILASTQFEPTA	83 / 6 AA	107
Phosphosite 16:	KCTD3	Q9Y597	S628	SHLRESNSSLQLQHH	75 / 8 AA	89
Phosphosite 17:	ZBTB44	Q8NCP5	S553	EHGFESNSSVQMPVI	75 / 8 AA	64
Phosphosite 18:	FIS1	Q9Y3D6	S33	AAGSVSKSTQFEYAW	100 / 5 AA	17
Phosphosite 19:	KIAA1432	Q4ADV7	S62	TYKEPAKSSTQFGSY	71 / 7 AA	159
Phosphosite 20:	FLJ43906	Q4AC94	T204	ENTEPSSTQFQVPSR	83 / 6 AA	260