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:	S281
P-Site Sequence:	GAAFLAQSPETPEMS
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	S281	GAAFLAQSPETPEMS	100 / 9 AA	58
Phosphosite 1:	NOTCH1	P46531	S2513	EHPFLTPSPESPDQW	66 / 9 AA	273
Phosphosite 2:	TESK1	Q15569	S364	SDLFLPPSPESPPNW	66 / 9 AA	68
Phosphosite 3:	FAM90A1	Q86YD7	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 4:	FAM90A2P	Q658T7	S426	LGVFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 5:	FAM90A24P	P0C7X0	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 6:	FAM90A14	P0C7W9	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 7:	FAM90A13	P0C7W8	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 8:	FAM90A15	P0C7V4	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 9:	FAM90A23	A8MXZ1	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 10:	FAM90A5	A8MXJ8	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 11:	FAM90A12	A8MX19	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 12:	FAM90A22	A8MWA6	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 13:	FAM90A9	A6NNJ1	S427	PGTFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 14:	FAM90A7	A6NKC0	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 15:	FAM90A8	A6NJQ4	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 16:	FAM90A20	A6NIJ5	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 17:	FAM90A16	A6NEW6	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 18:	FAM90A18	A6NE21	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 19:	FAM90A10	A6NDY2	S427	PGAFLAQSPHVSEKS	66 / 9 AA	50
Phosphosite 20:	OC90	Q02509	T194	TSFCLAQTPETTIKE	85 / 7 AA	53