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:	IGSF21
Human P-Site:	S294
P-Site Sequence:	LRHSRTPSSDGTVEV
UniProt:	Q96ID5
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	IGSF21	Q96ID5	S294	LRHSRTPSSDGTVEV	100 / 9 AA	52
Phosphosite 1:	IGSF21	Q96ID5	S295	RHSRTPSSDGTVEVR	100 / 8 AA	52
Phosphosite 2:	MED1	Q15648	S1000	GKRSRTPSNDGKSKD	87 / 8 AA	168
Phosphosite 3:	IGSF21	Q96ID5	T292	YFLRHSRTPSSDGTV	100 / 7 AA	52
Phosphosite 4:	ZIC5	Q96T25	S615	PSHLHTPSSNGTTSE	75 / 8 AA	66
Phosphosite 5:	R3HCC1	Q9Y3T6	S126	HQDIRVPSSDGLSGP	85 / 7 AA	53
Phosphosite 6:	ZIC5	Q96T25	S616	SHLHTPSSNGTTSET	75 / 8 AA	66
Phosphosite 7:	R3HCC1	Q9Y3T6	S127	QDIRVPSSDGLSGPC	85 / 7 AA	53
Phosphosite 8:	MLK1	P80192	S933	LLASRSPSSNGLSPS	75 / 8 AA	122
Phosphosite 9:	TPP2	P29144	S415	TWSSRGPSADGALGV	66 / 9 AA	138
Phosphosite 10:	MED1	Q15648	T998	KPGKRSRTPSNDGKS	85 / 7 AA	168
Phosphosite 11:	TRAD	O60229	S1553	LWSGRTPSSDNKTVL	100 / 6 AA	340
Phosphosite 12:	TRAD	O60229	S1554	WSGRTPSSDNKTVLK	85 / 7 AA	340
Phosphosite 13:	USP31	Q70CQ4	S1028	STTKRSPSSKGTSEP	75 / 8 AA	147
Phosphosite 14:	TRAD	O60229	T1551	FALWSGRTPSSDNKT	100 / 6 AA	340
Phosphosite 15:	PILRB	Q9UKJ0	S224	RKGSRAPSSDF____	85 / 7 AA	26
Phosphosite 16:	USP31	Q70CQ4	S1029	TTKRSPSSKGTSEPE	75 / 8 AA	147
Phosphosite 17:	MTUS1	Q9ULD2	T556	QQTVLSRTPRSDLNA	85 / 7 AA	141
Phosphosite 18:	TNKS1BP1	Q9C0C2	S1620	PRASRVPSSDEEVVE	85 / 7 AA	182
Phosphosite 19:	ATP10A	O60312	S647	SFPSTPSSDGMLLRL	100 / 6 AA	168
Phosphosite 20:	TFAP2B	Q92481	S62	PPLSHTPSSDFQPPY	85 / 7 AA	50