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:	MMP21
Human P-Site:	S271
P-Site Sequence:	EHFTPPTSDTGISLL
UniProt:	Q8N119
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MMP21	Q8N119	S271	EHFTPPTSDTGISLL	100 / 9 AA	65
Phosphosite 1:	SHPRH	Q149N8	S605	QGHCPATSDSGITDV	75 / 8 AA	193
Phosphosite 2:	PARP2	Q9UGN5	T544	PLGPASDTGILNPDG	85 / 7 AA	66
Phosphosite 3:	TMEPAI	Q969W9	S210	GGPCPPSSNSGISAT	62 / 8 AA	32
Phosphosite 4:	C18orf1	O15165	S233	GGPCPPSSNSGISAS	62 / 8 AA	34
Phosphosite 5:	ANKRD34B	A5PLL1	S384	AGLTPPTSEDGKALI	75 / 8 AA	56
Phosphosite 6:	PHC2	Q8IXK0	T427	SQQCHPPTPDTGPQN	85 / 7 AA	91
Phosphosite 7:	MAPK8IP2	Q13387	S224	PGGTSPSSDPGIEAD	66 / 9 AA	88
Phosphosite 8:	SPEG	Q15772	S176	SLDTPPTSVTGTSEE	87 / 8 AA	354
Phosphosite 9:	SETD5	Q9C0A6	S954	HPSLGPTSETGFPSR	71 / 7 AA	158
Phosphosite 10:	SPEG	Q15772	T175	TSLDTPPTSVTGTSE	87 / 8 AA	354
Phosphosite 11:	SREBF1	P36956	S430	DTLTPPPSDAGSPFQ	75 / 8 AA	122
Phosphosite 12:	UPF3A	Q9H1J1	S48	EAETPPTSSSGCGGG	66 / 9 AA	55
Phosphosite 13:	ATG4B	Q9Y4P1	T70	GTGPTSDTGWGCMLR	100 / 6 AA	44
Phosphosite 14:	UBXN4	Q92575	T160	ELCEIPPTSDTKSDT	100 / 6 AA	57
Phosphosite 15:	SETD5	Q9C0A6	T956	SLGPTSETGFPSRSG	71 / 7 AA	158
Phosphosite 16:	UBXN4	Q92575	S161	LCEIPPTSDTKSDTA	100 / 6 AA	57
Phosphosite 17:	SHKBP1	Q8TBC3	T388	SVYLTPKTSDSGNWI	75 / 8 AA	76
Phosphosite 18:	SHKBP1	Q8TBC3	S389	VYLTPKTSDSGNWIE	75 / 8 AA	76
Phosphosite 19:	UPF3A	Q9H1J1	T47	QEAETPPTSSSGCGG	75 / 8 AA	55
Phosphosite 20:	PNMA1	Q8ND90	S97	VLFKPPTSDAEFLER	62 / 8 AA	40