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:	MATN4
Human P-Site:	S502
P-Site Sequence:	LVFTDGRSQDDISVW
UniProt:	O95460
Intern. Prot. ID:	IPI00021939

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MATN4	O95460	S502	LVFTDGRSQDDISVW	100 / 9 AA	68
Phosphosite 1:	COL14A1	Q05707	S1146	VVITDGRSQDDVNKI	88 / 9 AA	194
Phosphosite 2:	COL14A1	Q05707	S271	ILITDGKSQDDIIPP	88 / 9 AA	194
Phosphosite 3:	COL12A1	Q99715	S2437	VVVTDGRSQDEVKKA	77 / 9 AA	333
Phosphosite 4:	COL12A1	Q99715	S1312	VLITDGKSQDDVEAP	77 / 9 AA	333
Phosphosite 5:	COL21A1	Q96P44	S147	VVLTDGKSQDDVKDA	77 / 9 AA	99
Phosphosite 6:	MATN1	P21941	S388	IVFTDGRSQDYINDA	88 / 9 AA	54
Phosphosite 7:	COL12A1	Q99715	S253	IIITDGKSQDEVEIP	66 / 9 AA	333
Phosphosite 8:	COL6A6	A6NMZ7	S1114	LVLTDGQSQDEVAQA	66 / 9 AA	247
Phosphosite 9:	VIT	Q6UXI7	S605	ILITDGRSYDDVRIP	77 / 9 AA	74
Phosphosite 10:	CD109	Q6YHK3	T110	ELRVTGRTQDEILFS	71 / 7 AA	162
Phosphosite 11:	PUM1	Q14671	S75	SIGVAGRSQDDAMVD	100 / 6 AA	126
Phosphosite 12:	PLCL4	O75038	S1080	GSQTDGRSQPRTLGH	100 / 6 AA	68
Phosphosite 13:	COL6A3	P12111	S1552	VLVLGGKSQDDVSRF	71 / 7 AA	344
Phosphosite 14:	MPP5	Q8N3R9	S143	HTLVDSQSQEDISLL	55 / 9 AA	77
Phosphosite 15:	ATP13A2	Q9NQ11	S130	SQAEDGRSQAAVGAV	62 / 8 AA	129
Phosphosite 16:	VIT	Q6UXI7	Y606	LITDGRSYDDVRIPA	75 / 8 AA	74
Phosphosite 17:	C17orf53	Q8N3J3	S413	PHQQSGRSLEDIMVS	71 / 7 AA	70
Phosphosite 18:	AGTRAP	Q6RW13	S153	FAVPEGRSQDARGY_	83 / 6 AA	17
Phosphosite 19:	LRRC8D	Q7L1W4	T95	QDQDGRTTNDISFGT	62 / 8 AA	98
Phosphosite 20:	MED12L	Q86YW9	Y1505	SNWREERYQDDIKAR	62 / 8 AA	240