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:	USP53
Human P-Site:	S686
P-Site Sequence:	WQMQRTESGYESSDH
UniProt:	Q70EK8
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	USP53	Q70EK8	S686	WQMQRTESGYESSDH	100 / 9 AA	121
Phosphosite 1:	USP54	Q70EL1	S660	RLIQRMESGYESSER	88 / 9 AA	187
Phosphosite 2:	COL4A3BP	Q9Y5P4	S119	IEQHKTESGYGSESS	66 / 9 AA	71
Phosphosite 3:	USP53	Q70EK8	Y688	MQRTESGYESSDHIS	100 / 7 AA	121
Phosphosite 4:	CELSR2	Q9HCU4	S2045	ERLQRNESGLDSGRS	66 / 9 AA	317
Phosphosite 5:	RAPH1	Q70E73	S522	EALKRTESAYDWTSL	55 / 9 AA	135
Phosphosite 6:	TEPP	Q6URK8	S36	LSSQRTESPYKPVHL	66 / 9 AA	31
Phosphosite 7:	TEPP	Q6URK8	T34	CPLSSQRTESPYKPV	85 / 7 AA	31
Phosphosite 8:	KLRG2	A4D1S0	S195	LAAARTESGCDAEGR	62 / 8 AA	43
Phosphosite 9:	COL4A3BP	Q9Y5P4	T117	DAIEQHKTESGYGSE	71 / 7 AA	71
Phosphosite 10:	ANKRD44	Q8N8A2	S557	LLLERTNSGFEESDS	62 / 8 AA	108
Phosphosite 11:	TRS85	Q9Y2L5	S209	GDEQRAESIYEEMKQ	75 / 8 AA	161
Phosphosite 12:	UBAP2L	Q14157	S569	SSNQSQESGYQSGPI	66 / 9 AA	115
Phosphosite 13:	NECAP2	Q9NVZ3	Y6	__MEESGYESVLCVK	100 / 6 AA	28
Phosphosite 14:	KIAA1688	Q9C0H5	S583	WDSQQDGSGYESDGA	66 / 9 AA	121
Phosphosite 15:	DHRS12	A0PJE2	Y22	REYTKSGYESACKDF	85 / 7 AA	35
Phosphosite 16:	USP54	Q70EL1	Y662	IQRMESGYESSERNS	85 / 7 AA	187
Phosphosite 17:	RNF168	Q8IYW5	S353	MPCGRTESGCAPTSG	62 / 8 AA	65
Phosphosite 18:	MPRIP	Q6WCQ1	S265	GRKVRVESGYFSLEK	83 / 6 AA	117
Phosphosite 19:	MST1P9	Q2TV78	S178	GAVDRTESGRECQRW	66 / 9 AA	80
Phosphosite 20:	MSP	P26927	S208	GAVDRTESGRECQRW	66 / 9 AA	80