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:	S582
P-Site Sequence:	GKDGLMGSPGFKGEA
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	S582	GKDGLMGSPGFKGEA	100 / 9 AA	99
Phosphosite 1:	COL19A1	Q14993	S520	GPPGLIGSPGLKGQQ	77 / 9 AA	115
Phosphosite 2:	TET3	O43151	S1414	FNSALKGSPGFQDKL	66 / 9 AA	179
Phosphosite 3:	COL4A2	P08572	S903	GEQGHPGSPGFKGID	77 / 9 AA	168
Phosphosite 4:	COL4A1	P02462	S656	GAEGLPGSPGFPGPQ	87 / 8 AA	161
Phosphosite 5:	ARFGEF3	Q5TH69	S714	FCSGMMHSPGFDGNS	66 / 9 AA	241
Phosphosite 6:	COL1A2	P08123	S401	GPPGLRGSPGSRGLP	66 / 9 AA	129
Phosphosite 7:	SPIRE2	Q8WWL2	S54	GCRGLRGSPGRRLRD	66 / 9 AA	80
Phosphosite 8:	RPL7L1	Q6DKI1	T230	GFLKEMGTPGYRGER	57 / 7 AA	29
Phosphosite 9:	COL7A1	Q02388	S1327	GAPGLKGSPGLPGPR	75 / 8 AA	295
Phosphosite 10:	TJP1	Q07157	S912	QPIHRIDSPGFKPAS	71 / 7 AA	195
Phosphosite 11:	COL22A1	Q8NFW1	S994	GEPGLRGSPGLPGPL	75 / 8 AA	161
Phosphosite 12:	COL4A1	P02462	S1101	GSPGLKGSPGSVGYP	85 / 7 AA	161
Phosphosite 13:	CCBE1	Q6UXH8	S266	GSPGPKGSPGFPGMP	75 / 8 AA	44
Phosphosite 14:	OTOL1	A6NHN0	S216	GDQGAMGSPGLHGGP	75 / 8 AA	49
Phosphosite 15:	COL4A1	P02462	S1199	GFPGLAGSPGIPGSK	75 / 8 AA	161
Phosphosite 16:	COL4A3	Q01955	S512	GAAGLKGSPGSPGNT	85 / 7 AA	162
Phosphosite 17:	COL5A3	P25940	T660	GPQGLIGTPGEKGPP	66 / 9 AA	172
Phosphosite 18:	COL4A1	P02462	S300	GDKGEKGSPGFPGEP	75 / 8 AA	161
Phosphosite 19:	COL1A1	P02452	S639	GEQGPAGSPGFQGLP	66 / 9 AA	139
Phosphosite 20:	COL1A1	P02452	T541	LPGAKGLTGSPGSPG	85 / 7 AA	139