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:	COL21A1
Human P-Site:	T651
P-Site Sequence:	GSPGQPGTPGSKGSK
UniProt:	Q96P44
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	COL21A1	Q96P44	T651	GSPGQPGTPGSKGSK	100 / 9 AA	99
Phosphosite 1:	COL4A6	Q14031	T814	GQVGQPGTPGSSGPY	100 / 8 AA	164
Phosphosite 2:	C1QB	P02746	T53	GPDGQPGTPGIKGEK	88 / 9 AA	26
Phosphosite 3:	COL4A3	Q01955	T929	GVKGQRGTPGAKGEQ	77 / 9 AA	162
Phosphosite 4:	COL4A6	Q14031	S692	GTPGQPGSSGSKGEP	77 / 9 AA	164
Phosphosite 5:	GHDC	Q8N2G8	T176	NTLGQVGTPGTKDPR	77 / 9 AA	58
Phosphosite 6:	COL4A5	P29400	T1111	GLPGLPGTPGAKGQP	77 / 9 AA	161
Phosphosite 7:	COL6A6	A6NMZ7	T1544	GWPGPPGTPGSRRKT	77 / 9 AA	247
Phosphosite 8:	COL2A1	P02458	T397	GPRGEPGTPGSPGPA	87 / 8 AA	142
Phosphosite 9:	COL4A2	P08572	T1321	GNPGAPGTPGTKGWA	77 / 9 AA	168
Phosphosite 10:	CO3A1	P02461	S131	GIPGQPGSPGSPGPP	87 / 8 AA	139
Phosphosite 11:	Rabphilin 3A	Q9Y2J0	T296	PQPGQPGTPGGSRPG	100 / 7 AA	77
Phosphosite 12:	tau	P10636	T522	SSPGSPGTPGSRSRT	77 / 9 AA	79
Phosphosite 13:	COL11A2	P13942	S506	GPLGQPGSPGLKGES	77 / 9 AA	172
Phosphosite 14:	COL27A1	Q8IZC6	T1280	GDPGPPGTPGPKGSR	77 / 9 AA	187
Phosphosite 15:	COL4A1	P02462	T1021	GGMGLPGTPGEKGVP	77 / 9 AA	161
Phosphosite 16:	COL4A2	P08572	T915	GIDGMPGTPGLKGDR	77 / 9 AA	168
Phosphosite 17:	COL2A1	P02458	T157	GRDGEPGTPGNPGPP	75 / 8 AA	142
Phosphosite 18:	EMID2	Q96A83	T327	GPPGPPGTPGSQGLA	77 / 9 AA	45
Phosphosite 19:	EPS8L3	Q8TE67	T511	LEPLQPGTPGTQGQS	75 / 8 AA	67
Phosphosite 20:	MN1	Q10571	T1129	GGPGHPGTPGLEQVR	85 / 7 AA	136