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:	PAPPA
Human P-Site:	S646
P-Site Sequence:	ADDDCTDSFTPNQVA
UniProt:	Q13219
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PAPPA	Q13219	S646	ADDDCTDSFTPNQVA	100 / 9 AA	181
Phosphosite 1:	PAPPA	Q13219	T644	SYADDDCTDSFTPNQ	100 / 7 AA	181
Phosphosite 2:	PAPPA	Q13219	T648	DDCTDSFTPNQVARM	100 / 7 AA	181
Phosphosite 3:	CPOX	P36551	S376	VKKHCDDSFTPQEKL	85 / 7 AA	50
Phosphosite 4:	PEG3	Q9GZU2	T1513	DCHECTETFTSSTAF	44 / 9 AA	181
Phosphosite 5:	PDE5A	O76074	S379	VDEDCSDSFSSVFHM	62 / 8 AA	100
Phosphosite 6:	LIG4	P49917	S63	NHKDVTDSFYPAMRL	75 / 8 AA	104
Phosphosite 7:	SLCO3A1	Q9UIG8	T483	ECQTDSFTPVCGADG	100 / 6 AA	76
Phosphosite 8:	ZNF271	Q14591	S406	ACSDCTKSFSRRSDL	62 / 8 AA	76
Phosphosite 9:	Gramd2	Q8IUY3	S238	SSVDSTDSFFPSRKP	66 / 9 AA	40
Phosphosite 10:	BIRC6	Q9NR09	S707	EENLCIDSITPCADG	71 / 7 AA	528
Phosphosite 11:	ACO2	Q99798	T195	LIGTDSHTPNGGGLG	85 / 7 AA	85
Phosphosite 12:	ACO2	Q99798	S193	VLLIGTDSHTPNGGG	85 / 7 AA	85
Phosphosite 13:	TMEM131	Q92545	T954	EALLKDCTDSLKLRE	71 / 7 AA	201
Phosphosite 14:	TMEM131	Q92545	S956	LLKDCTDSLKLREPN	71 / 7 AA	201
Phosphosite 15:	PAX3	P23760	S369	GFSSYTDSFVPPSGP	71 / 7 AA	53
Phosphosite 16:	Putative protein C3P1	Q6ZMU1	S327	QANDCLDSFASPSGC	71 / 7 AA	40
Phosphosite 17:	ACBD5	Q5T8D3	S325	GQEESLDSFTSNNGP	55 / 9 AA	60
Phosphosite 18:	ZNF271	Q14591	T404	PYACSDCTKSFSRRS	71 / 7 AA	76
Phosphosite 19:	NOT1	A5YKK6	T2147	MRLPDPFTPNLKVDM	83 / 6 AA	241
Phosphosite 20:	MTMR15	Q9Y2M0	S874	PLDLCTDSFFTSRRP	100 / 5 AA	114