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:	PRRX1
Human P-Site:	T99
P-Site Sequence:	RKQRRNRTTFNSSQL
UniProt:	P54821
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PRRX1	P54821	T99	RKQRRNRTTFNSSQL	100 / 9 AA	27
Phosphosite 1:	PRRX2	Q99811	T109	KKQRRNRTTFNSSQL	100 / 9 AA	27
Phosphosite 2:	PRRX2	Q99811	T110	KQRRNRTTFNSSQLQ	100 / 8 AA	27
Phosphosite 3:	PRRX1	P54821	T100	KQRRNRTTFNSSQLQ	100 / 8 AA	27
Phosphosite 4:	ALX4	Q9H161	T219	GKKRRNRTTFTSYQL	88 / 9 AA	44
Phosphosite 5:	ALX3	O95076	T158	SKKRRNRTTFSTFQL	77 / 9 AA	37
Phosphosite 6:	ALX1	Q15699	T137	SKKRRHRTTFTSLQL	77 / 9 AA	37
Phosphosite 7:	RAX	Q9Y2V3	T141	KKHRRNRTTFTTYQL	77 / 9 AA	37
Phosphosite 8:	RAX2	Q96IS3	T32	KKHRRNRTTFTTYQL	77 / 9 AA	20
Phosphosite 9:	DRGX	A6NNA5	T38	RKQRRNRTTFTLQQL	100 / 7 AA	29
Phosphosite 10:	ARX	Q96QS3	T333	RKQRRYRTTFTSYQL	77 / 9 AA	58
Phosphosite 11:	PROP1	O75360	T74	HSRRRHRTTFSPVQL	66 / 9 AA	25
Phosphosite 12:	ALX4	Q9H161	T220	KKRRNRTTFTSYQLE	87 / 8 AA	44
Phosphosite 13:	PHOX2B	Q99453	T103	RKQRRIRTTFTSAQL	77 / 9 AA	32
Phosphosite 14:	PHOX2A	O14813	T95	RKQRRIRTTFTSAQL	77 / 9 AA	30
Phosphosite 15:	DHX57	Q6P158	T768	LKARRNRTAFEEVEE	75 / 8 AA	156
Phosphosite 16:	PKD1L1	Q8TDX9	T1574	LDNRRNKTTFVLLRD	85 / 7 AA	315
Phosphosite 17:	SEBOX	Q9HB31	T55	GSHRRKRTTFSKGQL	75 / 8 AA	24
Phosphosite 18:	FAM122A	Q96E09	T63	PSARRNSTTFPSRHG	77 / 9 AA	31
Phosphosite 19:	VSX2	P58304	T153	RKKRRHRTIFTSYQL	66 / 9 AA	39
Phosphosite 20:	PAX3	P23760	T224	RKQRRSRTTFTAEQL	66 / 9 AA	53