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:	PTPN21
Human P-Site:	S637
P-Site Sequence:	AQLHKRNSIEVAGLS
UniProt:	Q16825
Intern. Prot. ID:	IPI00004388

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PTPN21	Q16825	S637	AQLHKRNSIEVAGLS	100 / 9 AA	133
Phosphosite 1:	POU3F1	Q03052	S345	RKRKKRTSIEVGVKG	75 / 8 AA	45
Phosphosite 2:	POU3F4	P49335	S284	RKRKKRTSIEVSVKG	75 / 8 AA	39
Phosphosite 3:	POU3F2	P20265	S360	RKRKKRTSIEVSVKG	75 / 8 AA	47
Phosphosite 4:	POU3F3	P20264	S412	RKRKKRTSIEVSVKG	75 / 8 AA	50
Phosphosite 5:	GPR98	Q8WXG9	S1843	PTIHKRASLGVASQI	66 / 9 AA	693
Phosphosite 6:	FAM70A	Q5JRV8	S29	FNRRKRNSIYVTVTL	66 / 9 AA	38
Phosphosite 7:	GPR34	Q9UPC5	S88	GIHRKRNSIQIYLLN	62 / 8 AA	44
Phosphosite 8:	POU3F4	P49335	T283	GRKRKKRTSIEVSVK	85 / 7 AA	39
Phosphosite 9:	POU3F2	P20265	T359	GRKRKKRTSIEVSVK	85 / 7 AA	47
Phosphosite 10:	SLC3A1	Q07837	S10	EDKSKRDSIEMSMKG	62 / 8 AA	79
Phosphosite 11:	MPZL3	Q6UWV2	S200	RSGYKKSSIEVSDDT	55 / 9 AA	26
Phosphosite 12:	MPZL3	Q6UWV2	S199	SRSGYKKSSIEVSDD	62 / 8 AA	26
Phosphosite 13:	GYS1	P13807	S710	TSGSKRNSVDTATSS	62 / 8 AA	84
Phosphosite 14:	PTPN14	Q15678	S642	GTVNKRHSLEVMNSM	62 / 8 AA	135
Phosphosite 15:	PHIP	Q8WWQ0	T1436	LRFHKRNTITKRRKK	83 / 6 AA	207
Phosphosite 16:	HEATR3	Q7Z4Q2	S155	KKDQNRNSIENIANE	71 / 7 AA	75
Phosphosite 17:	ARRB1	P49407	S163	EKIHKRNSVRLVIRK	83 / 6 AA	47
Phosphosite 18:	ARRB2	P32121	S164	EKSHKRNSVRLVIRK	83 / 6 AA	46
Phosphosite 19:	YARS	P54577	S312	HPGDLKNSVEVALNK	71 / 7 AA	59
Phosphosite 20:	GPR101	Q96P66	S233	LYNVKRHSLEVRVKD	71 / 7 AA	57