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:	PITX2
Human P-Site:	S283
P-Site Sequence:	TCNSSLASLRLKAKQ
UniProt:	Q99697
Intern. Prot. ID:	IPI00220802

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PITX2	Q99697	S283	TCNSSLASLRLKAKQ	100 / 9 AA	35
Phosphosite 1:	PITX1	P78337	S284	TCNSSLASLRLKSKQ	100 / 9 AA	34
Phosphosite 2:	PITX3	O75364	S266	PCNSSLASLRLKAKQ	100 / 9 AA	32
Phosphosite 3:	PRRX2	Q99811	S234	NMANSIASLRLKAKE	77 / 9 AA	27
Phosphosite 4:	UNC13D	Q70J99	S843	QRSSSLASNRLKIAL	88 / 9 AA	123
Phosphosite 5:	PLAGL1	Q9UM63	S315	TSYSPLASLPLKADT	77 / 9 AA	51
Phosphosite 6:	PLD1	Q13393	S522	AAMESMESLRLKDKN	75 / 8 AA	124
Phosphosite 7:	ALX3	O95076	S327	YKSPSLVSLRVKPKE	66 / 9 AA	37
Phosphosite 8:	TTN	Q8WZ42	S1711	FFKKKLTSLRLKRFG	85 / 7 AA	3816
Phosphosite 9:	USP31	Q70CQ4	S1203	VRSSSMASLRSPSTS	85 / 7 AA	147
Phosphosite 10:	KCNQ4	P56696	S494	DRTRFRASLRLKPRT	100 / 6 AA	77
Phosphosite 11:	LRRC14	Q15048	S252	ARFQHLASLRLHYVH	100 / 6 AA	55
Phosphosite 12:	JPH1	Q9HDC5	S165	PLRTSLASLRSEQSN	85 / 7 AA	72
Phosphosite 13:	RHBDD3	Q9Y3P4	S326	LSKSSVSSLRLQQLE	66 / 9 AA	40
Phosphosite 14:	JPH3	Q8WXH2	S236	ESKSSLASQRSKQSS	77 / 9 AA	81
Phosphosite 15:	piccolo	Q9Y6V0	S4244	KRDSSSSSLRLKAQE	77 / 9 AA	567
Phosphosite 16:	ZNF76	P36508	S516	AEDSSVASLRHQQVA	66 / 9 AA	62
Phosphosite 17:	LGR6	Q9HBX8	S142	WELPSLQSLRLDANL	66 / 9 AA	104
Phosphosite 18:	LGR4	Q9BXB1	S133	RGLSALQSLRLDANH	66 / 9 AA	104
Phosphosite 19:	ASS1	P00966	S396	TGFININSLRLKEYH	62 / 8 AA	47
Phosphosite 20:	REXO1L1	Q8IX06	S276	VRRASLPSLSLKKPI	75 / 8 AA	74