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:	S1301
P-Site Sequence:	SFQGGFRSTQDTVIA
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	S1301	SFQGGFRSTQDTVIA	100 / 9 AA	193
Phosphosite 1:	C4A	P0C0L4	S1301	SFQGGFRSTQDTVIA	100 / 9 AA	193
Phosphosite 2:	CD109	Q6YHK3	S1180	NSLGGFASTQDTTVA	88 / 9 AA	162
Phosphosite 3:	C5	P01031	S1286	RYGGGFYSTQDTINA	88 / 9 AA	188
Phosphosite 4:	VCAN	P13611	S234	VRTYGFRSPQETYDV	75 / 8 AA	373
Phosphosite 5:	NEB	P20929	S2324	GHHVGFRSLQDDPKL	85 / 7 AA	773
Phosphosite 6:	NEB	P20929	S1348	GKHVGFRSLQDDPKL	85 / 7 AA	773
Phosphosite 7:	MACF1	Q9UPN3	S738	EKQDVFRSLQDTAEL	66 / 9 AA	620
Phosphosite 8:	PITPNM3	Q9BZ71	S298	SRKGSISSTQDTPVA	66 / 9 AA	107
Phosphosite 9:	SS18	Q15532	Y390	QGQQYGGYRPTQPGP	71 / 7 AA	46
Phosphosite 10:	LAMA5	O15230	S3155	YSGFGFHSAQDSALL	62 / 8 AA	400
Phosphosite 11:	TSHZ3	Q63HK5	S666	SSDGGFRSQENSPSP	55 / 9 AA	119
Phosphosite 12:	ZNF644	Q9H582	S253	SGTDGFRSENDTNWD	75 / 8 AA	150
Phosphosite 13:	POLL	Q9UGP5	S359	WYQQGFRSLEDIRSQ	62 / 8 AA	63
Phosphosite 14:	ZNF521	Q96K83	S1076	SCLKEFRSKQDLVKL	71 / 7 AA	148
Phosphosite 15:	ZNF423	Q2M1K9	S1075	LCLKEFRSKQDLVKL	71 / 7 AA	145
Phosphosite 16:	CCDC66	A2RUB6	T57	TGHILKSTQDTCIGS	71 / 7 AA	109
Phosphosite 17:	CCDC66	A2RUB6	S56	KTGHILKSTQDTCIG	71 / 7 AA	109
Phosphosite 18:	PPA2	Q9H2U2	T303	SDSPFRCTQEEARSL	66 / 6 AA	38
Phosphosite 19:	VPS13D	Q5THJ4	S2384	QIELHFRSTKDSSCF	71 / 7 AA	492
Phosphosite 20:	VPS13D	Q5THJ4	T2385	IELHFRSTKDSSCFT	71 / 7 AA	492