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:	MAST4
Human P-Site:	S1928
P-Site Sequence:	PQQREGSSPKHQDHT
UniProt:	O15021
Intern. Prot. ID:	IPI00307611

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MAST4	O15021	S1928	PQQREGSSPKHQDHT	100 / 9 AA	284
Phosphosite 1:	MAST4	O15021	S1927	NPQQREGSSPKHQDH	100 / 8 AA	284
Phosphosite 2:	TTBK1	Q5TCY1	S1261	LSRRESPSPSHQARP	66 / 9 AA	143
Phosphosite 3:	FAM170B	A6NMN3	S45	GTIQREGSSPRPGPA	85 / 7 AA	32
Phosphosite 4:	FAM170B	A6NMN3	S46	TIQREGSSPRPGPAI	85 / 7 AA	32
Phosphosite 5:	TRIM5	Q9C035	S322	EDKRQVSSPKPQIIY	66 / 9 AA	56
Phosphosite 6:	RPL37	P61927	T82	RHGFREGTTPKPKRA	71 / 7 AA	11
Phosphosite 7:	PAPPA	Q13219	S305	SPMKDGSSPKVEFSN	55 / 9 AA	181
Phosphosite 8:	ZNF423	Q2M1K9	S614	SSDVEVSSPKRQRLS	75 / 8 AA	145
Phosphosite 9:	RPL37	P61927	T83	HGFREGTTPKPKRAA	55 / 9 AA	11
Phosphosite 10:	SLC12A9	Q9BXP2	S658	ADSTREGSSPALSTL	100 / 6 AA	96
Phosphosite 11:	SLC22A20	A6NK97	S529	ERRVKEGSSKKHVEE	75 / 8 AA	60
Phosphosite 12:	SLC12A9	Q9BXP2	S659	DSTREGSSPALSTLF	100 / 6 AA	96
Phosphosite 13:	MED1	Q15648	T1440	SPLISGSTPKHERGS	71 / 7 AA	168
Phosphosite 14:	ALX4	Q9H161	S32	SQSREGSSPFRAFPG	100 / 6 AA	44
Phosphosite 15:	SLU7	O95391	S215	KLVEQANSPKHQWGE	62 / 8 AA	68
Phosphosite 16:	ARHGAP12	Q8IWW6	S451	ENESSPSSPKHQDTA	100 / 6 AA	96
Phosphosite 17:	RNF6	Q9Y252	S537	SQHREGSSQDRQAQG	66 / 9 AA	78
Phosphosite 18:	ALX4	Q9H161	S31	VSQSREGSSPFRAFP	100 / 6 AA	44
Phosphosite 19:	PAPPA	Q13219	S304	WSPMKDGSSPKVEFS	71 / 7 AA	181
Phosphosite 20:	TBC1D30	Q9Y2I9	S787	TAGREGSSPEGSTRR	100 / 6 AA	103