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:	C1s
Human P-Site:	S554
P-Site Sequence:	PICLPGTSSDYNLMD
UniProt:	P09871
Intern. Prot. ID:	IPI00017696

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C1s	P09871	S554	PICLPGTSSDYNLMD	100 / 9 AA	77
Phosphosite 1:	C1s	P09871	T553	SPICLPGTSSDYNLM	100 / 8 AA	77
Phosphosite 2:	C1s	P09871	S555	ICLPGTSSDYNLMDG	100 / 8 AA	77
Phosphosite 3:	PRTG	Q2VWP7	T572	QVLELPGTTHEYLLE	62 / 8 AA	127
Phosphosite 4:	NFkB-p105	P19838	S73	HGGLPGASSEKNKKS	66 / 9 AA	105
Phosphosite 5:	PCDH18	Q9HCL0	S940	MPPLPSPSSDYRSNM	75 / 8 AA	126
Phosphosite 6:	SMOC1	Q9H4F8	S284	GRPLPGTSTRYVMPS	75 / 8 AA	48
Phosphosite 7:	POM121L2	Q96KW2	S392	SELLPGTSPDSKPTA	85 / 7 AA	103
Phosphosite 8:	POM121L2	Q96KW2	T391	QSELLPGTSPDSKPT	85 / 7 AA	103
Phosphosite 9:	SMOC1	Q9H4F8	T283	TGRPLPGTSTRYVMP	75 / 8 AA	48
Phosphosite 10:	NACC1	Q96RE7	S268	RTSPGTSSAYTSDSP	75 / 8 AA	57
Phosphosite 11:	NACC1	Q96RE7	S267	ERTSPGTSSAYTSDS	75 / 8 AA	57
Phosphosite 12:	NACC1	Q96RE7	T266	SERTSPGTSSAYTSD	85 / 7 AA	57
Phosphosite 13:	MAP1B	P46821	S493	RVLFPGNSTQYNILE	55 / 9 AA	271
Phosphosite 14:	C1s	P09871	Y557	LPGTSSDYNLMDGDL	100 / 6 AA	77
Phosphosite 15:	ASXL1	Q8IXJ9	T469	SSPHLPGTSSAAPDL	100 / 6 AA	165
Phosphosite 16:	IRS2	Q9Y4H2	S967	SGTPGTSSDSRQRSP	100 / 6 AA	137
Phosphosite 17:	UBR5	O95071	S687	VKFPGTSSNTNCQNS	75 / 8 AA	309
Phosphosite 18:	DYDC2	Q96IM9	T125	KQEFLPGTSSLIPGM	100 / 6 AA	21
Phosphosite 19:	NSD1	Q96L73	T298	NMLELPGTSSSSTSQ	100 / 6 AA	297
Phosphosite 20:	IRS2	Q9Y4H2	S966	GSGTPGTSSDSRQRS	100 / 6 AA	137