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:	PHOX2B
Human P-Site:	S107
P-Site Sequence:	RIRTTFTSAQLKELE
UniProt:	Q99453
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PHOX2B	Q99453	S107	RIRTTFTSAQLKELE	100 / 9 AA	32
Phosphosite 1:	PHOX2A	O14813	S99	RIRTTFTSAQLKELE	100 / 9 AA	30
Phosphosite 2:	HOXD3	P31249	S203	RVRTAYTSAQLVELE	75 / 8 AA	46
Phosphosite 3:	HOXB3	P14651	S197	RARTAYTSAQLVELE	75 / 8 AA	44
Phosphosite 4:	HOXA3	O43365	S200	RARTAYTSAQLVELE	75 / 8 AA	46
Phosphosite 5:	ALX4	Q9H161	S223	RNRTTFTSYQLEELE	87 / 8 AA	44
Phosphosite 6:	ARX	Q96QS3	S337	RYRTTFTSYQLEELE	87 / 8 AA	58
Phosphosite 7:	ALX1	Q15699	S141	RHRTTFTSLQLEELE	87 / 8 AA	37
Phosphosite 8:	GBX1	Q14549	T269	RRRRTAFTSEQLLEL	75 / 8 AA	38
Phosphosite 9:	GBX2	P52951	T255	RRRRTAFTSEQLLEL	75 / 8 AA	37
Phosphosite 10:	CYP3A5	P20815	S139	LLSPTFTSGKLKEMF	75 / 8 AA	57
Phosphosite 11:	CYP3A4	P08684	S139	LLSPTFTSGKLKEMV	75 / 8 AA	57
Phosphosite 12:	PRRX2	Q99811	S113	RNRTTFNSSQLQALE	66 / 9 AA	27
Phosphosite 13:	PRRX1	P54821	S103	RNRTTFNSSQLQALE	66 / 9 AA	27
Phosphosite 14:	GBX1	Q14549	S270	RRRTAFTSEQLLELE	75 / 8 AA	38
Phosphosite 15:	GBX2	P52951	S256	RRRTAFTSEQLLELE	75 / 8 AA	37
Phosphosite 16:	ISX	Q2M1V0	T91	RVRTTFTTEQLHELE	75 / 8 AA	27
Phosphosite 17:	OTP	Q5XKR4	T112	KRHRTRFTPAQLNEL	75 / 8 AA	34
Phosphosite 18:	GSX1	Q9H4S2	S156	RMRTAFTSTQLLELE	75 / 8 AA	28
Phosphosite 19:	GSX2	Q9BZM3	S211	RMRTAFTSTQLLELE	75 / 8 AA	32
Phosphosite 20:	MSX1	P28360	T174	RKPRTPFTTAQLLAL	75 / 8 AA	31