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:	C4orf21
Human P-Site:	S1001
P-Site Sequence:	TSPEENISTLSPVST
UniProt:	Q86YA3
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4orf21	Q86YA3	S1001	TSPEENISTLSPVST	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	T1002	SPEENISTLSPVSTF	100 / 8 AA	119
Phosphosite 2:	RREB1	Q92766	S918	QVKQENISFLSPSSL	77 / 9 AA	181
Phosphosite 3:	FMNL2	Q96PY5	S403	EELEENISHLSEKLQ	87 / 8 AA	123
Phosphosite 4:	MUC16	Q8WXI7	S7245	IQKESISSLSPKLRE	75 / 8 AA	2353
Phosphosite 5:	MYH13	Q9UKX3	S994	TALEENISKLTKEKK	75 / 8 AA	224
Phosphosite 6:	COG4	Q9H9E3	S559	EVCSENISTLKKTLE	100 / 6 AA	89
Phosphosite 7:	KNL2	Q6P0N0	S362	RRSKRNISKLSPPRI	85 / 7 AA	129
Phosphosite 8:	COG4	Q9H9E3	T560	VCSENISTLKKTLES	100 / 6 AA	89
Phosphosite 9:	MSLN	Q13421	S60	ANPPNISSLSPRQLL	85 / 7 AA	69
Phosphosite 10:	AP3B1	O00203	S403	LANEANISTLLREFQ	85 / 7 AA	121
Phosphosite 11:	KIAA1414	Q9P2D3	S842	KGLAENKSTLGPEEV	75 / 8 AA	224
Phosphosite 12:	COMMD1	Q8N668	S183	SEVEESISTLISQPN	85 / 7 AA	21
Phosphosite 13:	COMMD1	Q8N668	S181	TLSEVEESISTLISQ	85 / 7 AA	21
Phosphosite 14:	KIAA1414	Q9P2D3	T843	GLAENKSTLGPEEVR	75 / 8 AA	224
Phosphosite 15:	IL18	Q14116	T109	VKCEKISTLSCENKI	85 / 7 AA	22
Phosphosite 16:	RNF168	Q8IYW5	T276	TEIEDMPTLSPQISL	62 / 8 AA	65
Phosphosite 17:	Smc4	Q9NTJ3	S1056	DNPIEEISVLSPEDL	75 / 8 AA	147
Phosphosite 18:	DCAF16	Q9NXF7	S23	SEEEENISYLNESSG	75 / 8 AA	24
Phosphosite 19:	KIAA1432	Q4ADV7	T1237	MVDENFSTLSLTQSE	85 / 7 AA	159
Phosphosite 20:	KRT19	P08727	S223	KNHEEEISTLRGQVG	75 / 8 AA	44