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:	Serine protease 53
Human P-Site:	S288
P-Site Sequence:	SPETPEMSDEDSCVA
UniProt:	Q2L4Q9
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	Serine protease 53	Q2L4Q9	S288	SPETPEMSDEDSCVA	100 / 9 AA	58
Phosphosite 1:	Sos1	Q07889	T270	IEDTVEMTDEGSPHP	66 / 9 AA	152
Phosphosite 2:	LAX1	Q8IWV1	S366	MKHREEMSNEDSSDY	85 / 7 AA	44
Phosphosite 3:	PDZRN4	Q6ZMN7	S731	IMEHPEKSDKDSSSA	75 / 8 AA	117
Phosphosite 4:	PDZRN3	Q9UPQ7	S750	ITELPEKSDKDSSSA	75 / 8 AA	120
Phosphosite 5:	PDZD4	Q76G19	S463	ISELPEKSDKDSTSA	75 / 8 AA	86
Phosphosite 6:	SOS2	Q07890	T268	IEDTVEMTDESSPHP	66 / 9 AA	153
Phosphosite 7:	OSBPL5	Q9H0X9	S789	PESCPELSDEEQDGD	71 / 7 AA	99
Phosphosite 8:	KIAA1731	Q9C0D2	S569	PASCPVISDEDSHRQ	75 / 8 AA	295
Phosphosite 9:	USP21	Q9UK80	S350	LLEEPELSDDDRANL	62 / 8 AA	63
Phosphosite 10:	Cdc37	Q16543	T136	VNTKPEKTEEDSEEV	62 / 8 AA	44
Phosphosite 11:	PAK1	Q13153	S249	QKKKPKMSDEEILEK	62 / 8 AA	61
Phosphosite 12:	KIAA0562	O60308	S401	AVVEPEMSNADISDA	71 / 7 AA	104
Phosphosite 13:	FAM21A	Q641Q2	S250	NRHTTQMSDEEEDDD	62 / 8 AA	147
Phosphosite 14:	FAM21B	Q5SNT6	S162	NRHTTQMSDEEEDDD	62 / 8 AA	137
Phosphosite 15:	ERC1	Q8IUD2	S734	ARASPEMSDRIQHLE	83 / 6 AA	128
Phosphosite 16:	ZNF541	Q9H0D2	S64	SLPTPDMSSEVLEDN	71 / 7 AA	148
Phosphosite 17:	PLCH1	Q4KWH8	S460	DAEEGEVSDEDSADE	85 / 7 AA	189
Phosphosite 18:	PLCL4	O75038	S487	DAEEGEVSDEDSADE	85 / 7 AA	68
Phosphosite 19:	DHX30	Q7L2E3	T230	RGSSFEMTDDDSAIR	71 / 7 AA	134
Phosphosite 20:	BRAP	Q7Z569	S32	SAAAGEMSDEEIKKT	62 / 8 AA	67