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:	S301
P-Site Sequence:	TFFRGLESQTKLVNG
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	S301	TFFRGLESQTKLVNG	100 / 9 AA	193
Phosphosite 1:	C4A	P0C0L4	S301	TFFRGLESQTKLVNG	100 / 9 AA	193
Phosphosite 2:	MPHOSPH6	Q99547	S25	FMQRGLDSETKKQLE	75 / 8 AA	19
Phosphosite 3:	C17orf75	Q9HAS0	S189	CEARGLESHIKSYLS	75 / 8 AA	45
Phosphosite 4:	SETD4	Q9NVD3	S64	GTGRGLMSQTSLQEG	77 / 9 AA	50
Phosphosite 5:	ZBTB7B	O15156	S332	NLAPGLDSQDKLVRK	66 / 9 AA	58
Phosphosite 6:	LRRC47	Q8N1G4	S358	ALKRFLTSQTKLHED	77 / 9 AA	63
Phosphosite 7:	YARS	P54577	S436	QKMRGVESQGMLLCA	66 / 9 AA	59
Phosphosite 8:	p40phox	Q15080	S315	RQARGLPSQKRLFPW	66 / 9 AA	39
Phosphosite 9:	POLR1E	Q9GZS1	S188	ESELALESQTKTYRE	85 / 7 AA	54
Phosphosite 10:	BARX1	Q9HBU1	S209	LQGGGLESPTKPKGR	85 / 7 AA	27
Phosphosite 11:	TSBP	Q5SRN2	S336	DVPRGQESQVKKSES	75 / 8 AA	62
Phosphosite 12:	DKFZp779A1753	P27816	S280	ALAKDMESPTKLDVT	55 / 9 AA	51
Phosphosite 13:	LYRM1	O43325	S102	LRGRGLRSQEKLRKL	77 / 9 AA	14
Phosphosite 14:	REG1B	P48304	S25	SLSQGQESQTELPNP	66 / 9 AA	19
Phosphosite 15:	RCOR2	Q8IZ40	S289	LTLRGLDSQLISLKR	83 / 6 AA	58
Phosphosite 16:	PHLDB1	Q86UU1	T800	KEAEALETETKLFED	62 / 8 AA	151
Phosphosite 17:	TTYH2	Q9BSA4	S462	SYSSGLGSQTSLQPP	66 / 9 AA	59
Phosphosite 18:	POSTN	Q15063	S155	DIRRGLESNVNVELL	55 / 9 AA	93
Phosphosite 19:	KIAA0644	Q7L0X0	S156	GSFEGLESLVKLRLD	75 / 8 AA	89
Phosphosite 20:	FRMD4A	Q9P2Q2	S714	HRSSSLESQGKLLGS	66 / 9 AA	115