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:	T125
P-Site Sequence:	KDSLSRTTNIQGINL
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	T125	KDSLSRTTNIQGINL	100 / 9 AA	193
Phosphosite 1:	C4B	P0C0L5	T125	KDSLSRTTNIQGINL	100 / 9 AA	193
Phosphosite 2:	C4B	P0C0L5	T124	LKDSLSRTTNIQGIN	100 / 8 AA	193
Phosphosite 3:	C4A	P0C0L4	T124	LKDSLSRTTNIQGIN	100 / 8 AA	193
Phosphosite 4:	TMC5	Q6UXY8	S269	RGVLSRTSSIQPSFR	75 / 8 AA	115
Phosphosite 5:	TMC5	Q6UXY8	T268	TRGVLSRTSSIQPSF	75 / 8 AA	115
Phosphosite 6:	FAM54B	Q9H019	T129	LPALSRTTELQDELS	66 / 9 AA	32
Phosphosite 7:	GDPD2	Q9HCC8	T279	DEHLSRTTNVASVFP	85 / 7 AA	62
Phosphosite 8:	ZBTB38	Q8NAP3	T805	PGGSLSKTTNIAEET	85 / 7 AA	134
Phosphosite 9:	ATP13A5	Q4VNC0	T882	ASPFTSKTTNIQCVP	85 / 7 AA	137
Phosphosite 10:	MYBPC3	Q14896	T1255	GIYVCRATNLQGEAR	55 / 9 AA	141
Phosphosite 11:	SLAIN2	Q9P270	S421	LPNLSRTSNTQVDSV	75 / 8 AA	63
Phosphosite 12:	WDHD1	O75717	T953	STALSRTTNNEKSPI	75 / 8 AA	126
Phosphosite 13:	GDPD4	Q6W3E5	T253	DFDLKRTTNIGEVQP	85 / 7 AA	72
Phosphosite 14:	GDPD5	Q8WTR4	T283	DTTLRRTTNVEEEFP	55 / 9 AA	69
Phosphosite 15:	PARP1	P09874	T867	LWHGSRTTNFAGILS	75 / 8 AA	113
Phosphosite 16:	TMEM107	Q6UX40	S31	TLFWSRDSNIQACLP	55 / 9 AA	16
Phosphosite 17:	GDPD5	Q8WTR4	T282	HDTTLRRTTNVEEEF	62 / 8 AA	69
Phosphosite 18:	GDPD2	Q9HCC8	S276	LMHDEHLSRTTNVAS	100 / 6 AA	62
Phosphosite 19:	C4B	P0C0L5	S122	PWLKDSLSRTTNIQG	100 / 6 AA	193
Phosphosite 20:	C4A	P0C0L4	S122	PWLKDSLSRTTNIQG	100 / 6 AA	193