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:	S1251
P-Site Sequence:	TPAPRNPSDPMPQAP
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	S1251	TPAPRNPSDPMPQAP	100 / 9 AA	193
Phosphosite 1:	C4A	P0C0L4	S1251	TPAPRNPSDPMPQAP	100 / 9 AA	193
Phosphosite 2:	Smad6	O43541	S142	AGAPRDASDPLAGAA	55 / 9 AA	53
Phosphosite 3:	JSRP1	Q96MG2	S173	SSAPREPSSPLPKFE	66 / 9 AA	36
Phosphosite 4:	BPIL3	Q8NFQ5	S192	NRKWTNLSDPMPVGQ	85 / 7 AA	50
Phosphosite 5:	BHLHE40	O14503	S192	GGTSRKPSDPAPKVM	75 / 8 AA	46
Phosphosite 6:	TULP1	O00294	S443	PIRPRNASDGLLVRW	62 / 8 AA	61
Phosphosite 7:	PIWIL4	Q7Z3Z4	S230	GRNFYNPSEPMEIPQ	83 / 6 AA	97
Phosphosite 8:	TTN	Q8WZ42	S22275	KSKPSKPSEPMLALD	62 / 8 AA	3816
Phosphosite 9:	DIS3L	Q8TF46	S326	KASGESPSEPMPTGR	71 / 7 AA	121
Phosphosite 10:	ARHGEF1	Q92888	S631	LSHLRQSSDPMLSEF	71 / 7 AA	102
Phosphosite 11:	CrkL	P46109	S107	EPAPRYPSPPMGSVS	75 / 8 AA	34
Phosphosite 12:	ARHGEF1	Q92888	S630	DLSHLRQSSDPMLSE	71 / 7 AA	102
Phosphosite 13:	CSPG3	O14594	T473	SHTEVAPTDPMPRRR	83 / 6 AA	143
Phosphosite 14:	CAMSAP1	Q5T5Y3	T1146	SSHPRTPTDPGLDSA	71 / 7 AA	178
Phosphosite 15:	SLC35F1	Q5T1Q4	S374	YKQFRNPSGPVVDLP	71 / 7 AA	45
Phosphosite 16:	LBR	Q14739	S516	NAFRKNPSDPKLAHL	71 / 7 AA	71
Phosphosite 17:	PHACTR4	Q8IZ21	S344	MISPRSPSPPLPTHI	66 / 9 AA	78
Phosphosite 18:	MLL	Q03164	S752	RSEPRSPSHSMRTRS	62 / 8 AA	432
Phosphosite 19:	ADAMTS2	O95450	S1033	GPCPRNISDPSKKSY	85 / 7 AA	135
Phosphosite 20:	GALNT3	Q14435	S621	SLVSCNPSDPLQKWI	83 / 6 AA	73