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:	CD28
Human P-Site:	T195
P-Site Sequence:	HSDYMNMTPRRPGPT
UniProt:	P10747
Intern. Prot. ID:	IPI00022339

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CD28	P10747	T195	HSDYMNMTPRRPGPT	100 / 9 AA	25
Phosphosite 1:	RNF123	Q5XPI4	T694	TAAVSLMTPRRPLST	100 / 6 AA	148
Phosphosite 2:	IRS1	P35568	S736	TGDYMNMSPVGDSNT	83 / 6 AA	132
Phosphosite 3:	ARHGEF5	Q12774	T645	PAIYSSVTPRRDRRS	62 / 8 AA	177
Phosphosite 4:	P4HA1	P13674	T301	RGEGIKMTPRRQKKL	62 / 8 AA	61
Phosphosite 5:	sciellin	O95171	S344	NARMNKTSRRSEDLD	62 / 8 AA	78
Phosphosite 6:	UBASH3B	Q8TF42	T23	EELYSKVTPRRNRQQ	62 / 8 AA	73
Phosphosite 7:	DENND3	A2RUS2	S445	RINGMLLSPRRPTVE	62 / 8 AA	136
Phosphosite 8:	KIAA1328	Q86T90	T324	DSHPTNMTPQHPKTH	71 / 7 AA	65
Phosphosite 9:	CD28	P10747	Y191	SRLLHSDYMNMTPRR	100 / 5 AA	25
Phosphosite 10:	PLD5	Q8N7P1	Y208	LKGAEVTYMNMTAYN	100 / 5 AA	61
Phosphosite 11:	sciellin	O95171	T343	VNARMNKTSRRSEDL	62 / 8 AA	78
Phosphosite 12:	NCoA5	Q9HCD5	S524	APASNMTSQRPVSST	71 / 7 AA	66
Phosphosite 13:	DYSF	O75923	T1804	PGPPFNITPRRARRF	62 / 8 AA	237
Phosphosite 14:	SPIRE2	Q8WWL2	T693	SVDVLNTTPRRSRQT	62 / 8 AA	80
Phosphosite 15:	FOXM1	Q08050	S4	____MKTSPRRPLIL	62 / 8 AA	84
Phosphosite 16:	IRS2	Q9Y4H2	T657	DDGYMPMTPGAALAG	83 / 6 AA	137
Phosphosite 17:	LAMA1	P25391	T166	CLSRYNITPRRGPPT	83 / 6 AA	337
Phosphosite 18:	POGZ	Q7Z3K3	T210	PQVFSQMTPVRPGST	55 / 9 AA	155
Phosphosite 19:	NHSL1	Q5SYE7	T1350	DGNDEVMTPSRPRTT	83 / 6 AA	171
Phosphosite 20:	RPS9	P46781	T15	VCRKTYVTPRRPFEK	83 / 6 AA	23