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:	ARHGAP21
Human P-Site:	S917
P-Site Sequence:	SQKSSEDSGSRKDSS
UniProt:	Q5T5U3
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ARHGAP21	Q5T5U3	S917	SQKSSEDSGSRKDSS	100 / 9 AA	217
Phosphosite 1:	ARHGAP21	Q5T5U3	S919	KSSEDSGSRKDSSSE	100 / 7 AA	217
Phosphosite 2:	LOC91431	Q6ZU11	S43	QDFSSQDSVSRKKVL	77 / 9 AA	105
Phosphosite 3:	SNTB2	Q13425	S231	SFSGSEDSGSPKHQN	87 / 8 AA	58
Phosphosite 4:	ZSCAN10	Q96SZ4	S455	DRRSSEGSGSRRRDS	77 / 9 AA	80
Phosphosite 5:	E2F8	A0AVK6	S613	RASMLEDSGSKKKFK	85 / 7 AA	94
Phosphosite 6:	E2F8	A0AVK6	S615	SMLEDSGSKKKFKED	85 / 7 AA	94
Phosphosite 7:	UTY	O14607	S1018	ESTSSENSGRRRKGP	66 / 9 AA	150
Phosphosite 8:	ZNF423	Q2M1K9	S919	RPGEDDGSRKKAEFI	85 / 7 AA	145
Phosphosite 9:	CBX4	O00257	S345	PQPQDAGSRKLSPTK	71 / 7 AA	61
Phosphosite 10:	BCLAF1	Q9NYF8	S718	SKGSRESSGSRKQEK	77 / 9 AA	106
Phosphosite 11:	VCAN	P13611	S1767	NVATSSDSGTRKSFM	66 / 9 AA	373
Phosphosite 12:	SNTB2	Q13425	S233	SGSEDSGSPKHQNST	85 / 7 AA	58
Phosphosite 13:	USP5	P45974	S159	EALLSADSASRKQEV	75 / 8 AA	96
Phosphosite 14:	ZKSCAN1	P17029	S287	KAETSEDSASRGETT	75 / 8 AA	64
Phosphosite 15:	LOC643677	Q8NDH2	S2210	KSFYSEDSGSHCTRE	85 / 7 AA	278
Phosphosite 16:	PPP1R8	Q12972	S251	LGLEESGSRRMQNFA	71 / 7 AA	38
Phosphosite 17:	PPP1R8	Q12972	S249	GSLGLEESGSRRMQN	71 / 7 AA	38
Phosphosite 18:	ANKRD26	Q9UPS8	S244	VDESSEDSLSRLSGK	87 / 8 AA	196
Phosphosite 19:	RING1	Q06587	S232	GGAGSEDSGDRGGTL	75 / 8 AA	42
Phosphosite 20:	GAB4	Q2WGN9	S485	TNTDSEDSGERYLFP	85 / 7 AA	62