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:	Y468
P-Site Sequence:	GLPGNPGYPGQPGQD
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	Y468	GLPGNPGYPGQPGQD	100 / 9 AA	99
Phosphosite 1:	COL4A5	P29400	Y320	GLPGDPGYPGEPGRD	77 / 9 AA	161
Phosphosite 2:	COL27A1	Q8IZC6	Y1365	GEPGDPGYPGQEGVQ	87 / 8 AA	187
Phosphosite 3:	COL4A5	P29400	Y175	GPKGNPGYPGPPGIQ	88 / 9 AA	161
Phosphosite 4:	COL10A1	Q03692	Y390	GSDGKPGYPGKPGLD	77 / 9 AA	66
Phosphosite 5:	COL4A2	P08572	Y605	GPPGDPGYPGIPGTK	77 / 9 AA	168
Phosphosite 6:	COL5A3	P25940	Y795	GVPGLPGYPGRPGPK	77 / 9 AA	172
Phosphosite 7:	COL4A3	Q01955	T911	GPPGNPGTPGQRGSP	87 / 8 AA	162
Phosphosite 8:	AATK	Q6ZMQ8	Y723	RASPEPGYPGEPLLG	75 / 8 AA	145
Phosphosite 9:	OTOL1	A6NHN0	Y165	GDQGVPGYPGKPGAQ	77 / 9 AA	49
Phosphosite 10:	NCOA6	Q14686	S975	NRPPGYPSQPVEQRP	85 / 7 AA	219
Phosphosite 11:	MTR	Q99707	S1179	RPAPGYPSQPDHTEK	85 / 7 AA	141
Phosphosite 12:	COL24A1	Q17RW2	Y598	GNIGSPGYPGRQGLA	75 / 8 AA	175
Phosphosite 13:	COL6A3	P12111	Y2360	GQKGDPGYPGPAGPK	85 / 7 AA	344
Phosphosite 14:	MTR	Q99707	Y1177	GIRPAPGYPSQPDHT	85 / 7 AA	141
Phosphosite 15:	GRINA	Q7Z429	Y21	YPPPNPGYPGGPQPP	87 / 8 AA	41
Phosphosite 16:	NCOA6	Q14686	Y973	FSNRPPGYPSQPVEQ	85 / 7 AA	219
Phosphosite 17:	COL4A5	P29400	Y1090	GEPGLPGYPGNPGIK	77 / 9 AA	161
Phosphosite 18:	COL4A4	P53420	Y844	GQPGLPGYPGSPGAP	77 / 9 AA	164
Phosphosite 19:	COL24A1	Q17RW2	Y730	GELGEPGYPGDKGAV	75 / 8 AA	175
Phosphosite 20:	COL7A1	Q02388	T1318	GRAGNPGTPGAPGLK	77 / 9 AA	295