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:	SP4
Human P-Site:	S638
P-Site Sequence:	REGEGRGSNEPGKKK
UniProt:	Q02446
Intern. Prot. ID:	IPI00025805

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	SP4	Q02446	S638	REGEGRGSNEPGKKK	100 / 9 AA	82
Phosphosite 1:	SP1	P08047	S617	KDSEGRGSGDPGKKK	77 / 9 AA	81
Phosphosite 2:	SOX5	P35711	S551	RESRGRGSNEPHIKR	100 / 7 AA	84
Phosphosite 3:	PTPN6	P29350	S294	VILQGRDSNIPGSDY	66 / 9 AA	68
Phosphosite 4:	SYNM	O15061	S1202	ACPEAWGSPEPGPAE	66 / 9 AA	173
Phosphosite 5:	ARFGEF1	Q9Y6D6	S595	KIAQGRGSQELGMSN	66 / 9 AA	209
Phosphosite 6:	PHLDB1	Q86UU1	S665	AGASGRSSEEPGVAT	75 / 8 AA	151
Phosphosite 7:	TRPS1	Q9UHF7	S1061	SVSEGKGSSERGSPI	66 / 9 AA	142
Phosphosite 8:	TOMM70A	O94826	S91	KTPEGRASPAPGSGH	66 / 9 AA	67
Phosphosite 9:	PNPLA1	Q8N8W4	S323	PKGDGRGSHGPPVSQ	62 / 8 AA	58
Phosphosite 10:	EPN2	O95208	S173	ITFGRGSSQPNLSTS	71 / 7 AA	68
Phosphosite 11:	PITPNM1	O00562	S621	VEGLGRGSPEPSALP	85 / 7 AA	135
Phosphosite 12:	EPN2	O95208	S172	QITFGRGSSQPNLST	71 / 7 AA	68
Phosphosite 13:	CCDC37	Q494V2	S362	SGGDSRGSNSPIPPT	62 / 8 AA	71
Phosphosite 14:	GSX1	Q9H4S2	S209	HKKEGKGSNHRGGGG	66 / 9 AA	28
Phosphosite 15:	SOX6	P35712	S617	DARGRASSEPHIKRP	71 / 7 AA	92
Phosphosite 16:	BACH1	O14867	S688	PPCARGNSEPGYARG	62 / 8 AA	82
Phosphosite 17:	PPP1R1A	Q13522	S148	PKTHERGSKEPSTKE	71 / 7 AA	19
Phosphosite 18:	TAGAP	Q8N103	S651	EDSRHRGSKEPLPGH	83 / 6 AA	81
Phosphosite 19:	SOX6	P35712	S616	RDARGRASSEPHIKR	71 / 7 AA	92
Phosphosite 20:	CACNA1H	O95180	S1071	GHLEGRGSLSPPLIM	75 / 8 AA	259