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:	T143
P-Site Sequence:	TKIAVVLTDGKSQDD
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	T143	TKIAVVLTDGKSQDD	100 / 9 AA	99
Phosphosite 1:	COL22A1	Q8NFW1	T150	KQVAILLTDGRSQDL	66 / 9 AA	161
Phosphosite 2:	C2	P06681	T375	RHAIILLTDGKSNMG	75 / 8 AA	83
Phosphosite 3:	COL6A3	P12111	T150	PQVIVVLTDGHSKDG	87 / 8 AA	344
Phosphosite 4:	TMEM145	Q8NBT3	T153	LEYEMVLTNGKSFWT	66 / 9 AA	56
Phosphosite 5:	COL14A1	Q05707	T1142	PKVIVVITDGRSQDD	75 / 8 AA	194
Phosphosite 6:	COL6A6	A6NMZ7	T545	PCHLVVLTNGMSKDS	75 / 8 AA	247
Phosphosite 7:	COL12A1	Q99715	T2433	PKVLVVVTDGRSQDE	75 / 8 AA	333
Phosphosite 8:	COL12A1	Q99715	T1308	RKIGVLITDGKSQDD	66 / 9 AA	333
Phosphosite 9:	COL6A6	A6NMZ7	T1110	PQVLLVLTDGQSQDE	75 / 8 AA	247
Phosphosite 10:	BMP2K	Q9NSY1	T1050	ENISVALTDGKDRGN	75 / 8 AA	129
Phosphosite 11:	VWA2	Q5GFL6	T158	PQILIIVTDGKSQGD	62 / 8 AA	82
Phosphosite 12:	ZNF34	Q8IZ26	T149	GPRAVTLTNGESSRE	66 / 9 AA	62
Phosphosite 13:	COL14A1	Q05707	T267	SKIGILITDGKSQDD	55 / 9 AA	194
Phosphosite 14:	LGI1	O95970	T32	LLSALLLTEGKKPAK	62 / 8 AA	64
Phosphosite 15:	COL12A1	Q99715	T549	PKVMILITDGKSSDA	62 / 8 AA	333
Phosphosite 16:	TTN	Q8WZ42	T9074	SSARLILTEGKNPPF	50 / 8 AA	3816
Phosphosite 17:	HERC1	Q15751	T4150	FKHSAVVTSDGKLFT	75 / 8 AA	532
Phosphosite 18:	ANTXR2	P58335	T147	SSIIIALTDGKLDGL	71 / 7 AA	54
Phosphosite 19:	KCTD20	Q7Z5Y7	T264	ECHIVVLTDEDSVDW	75 / 8 AA	47
Phosphosite 20:	USP9Y	O00507	T1108	MPAGVPLTDGSSDFQ	66 / 9 AA	291