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:	MRGPRX1
Human P-Site:	S299
P-Site Sequence:	QRALQDASEVDEGGG
UniProt:	Q96LB2
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MRGPRX1	Q96LB2	S299	QRALQDASEVDEGGG	100 / 9 AA	36
Phosphosite 1:	MRGPRX3	Q96LB0	T298	LQRALQDTPEVDEGG	75 / 8 AA	36
Phosphosite 2:	ALS2	Q96Q42	S820	QELLQDLSEVNDENT	66 / 9 AA	184
Phosphosite 3:	CREBBP	Q92793	S1030	EEDLQGASQVKEETD	66 / 9 AA	265
Phosphosite 4:	KCTD19	Q17RG1	S752	EQPLPEASEVDSLGV	75 / 8 AA	105
Phosphosite 5:	HAO2	Q9NYQ3	S56	PRYLRDVSEVDTRTT	75 / 8 AA	39
Phosphosite 6:	eIF3S6IP	Q9Y262	S517	DGEFQSASEVDFYID	75 / 8 AA	67
Phosphosite 7:	SPHK1IP	Q2M3C7	S225	SEHLEEESEVDESRN	66 / 9 AA	186
Phosphosite 8:	Bicd2	Q8TD16	S182	ARLLQDYSELEEENI	66 / 9 AA	94
Phosphosite 9:	DRCTNNB1A	Q9BYI3	S345	QEELMEISEVDEGFY	66 / 9 AA	58
Phosphosite 10:	MADD	Q8WXG6	S669	HAALGDASEVEIDEL	75 / 8 AA	183
Phosphosite 11:	KPNB3	O00410	S578	EKFMQDASDVMQLLL	71 / 7 AA	124
Phosphosite 12:	ERK4	P31152	S376	PDRCQDASEVQRDPR	100 / 6 AA	63
Phosphosite 13:	C9orf47	Q6ZRZ4	T106	RRRLQDATEQDPRPG	75 / 8 AA	22
Phosphosite 14:	MAK	P20794	S204	RPLFPGTSEVDEIFK	55 / 9 AA	71
Phosphosite 15:	TMEM171	Q8WVE6	S196	LNAGQDASEREEGQI	75 / 8 AA	35
Phosphosite 16:	MCM10	Q7L590	S588	QKRFLQSSSEVESPA	62 / 8 AA	98
Phosphosite 17:	MCM10	Q7L590	S589	KRFLQSSSEVESPAV	62 / 8 AA	98
Phosphosite 18:	KIF21B	O75037	S538	ASSMEDASEVIRRAK	71 / 7 AA	183
Phosphosite 19:	PROX1	Q92786	S566	CGDLQDMSEISPYSG	71 / 7 AA	83
Phosphosite 20:	LDLRAD3	Q86YD5	S251	SQAEQNASEVGSPPS	71 / 7 AA	37