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:	GDF5OS
Human P-Site:	S54
P-Site Sequence:	RYSYTVLSSWPERAL
UniProt:	Q5U4N7
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	GDF5OS	Q5U4N7	S54	RYSYTVLSSWPERAL	100 / 9 AA	28
Phosphosite 1:	AP3B1	O00203	S637	ATGYLELSNWPEVAP	66 / 9 AA	121
Phosphosite 2:	N4BP1	O75113	S256	KQMDTVLSSSPDVLF	75 / 8 AA	100
Phosphosite 3:	N4BP1	O75113	S257	QMDTVLSSSPDVLFD	75 / 8 AA	100
Phosphosite 4:	CST9	Q5W186	S76	RLLRVLSSWREDSMD	85 / 7 AA	18
Phosphosite 5:	KIAA0913	A7E2V4	S845	AFLLTVLSERPEHHN	75 / 8 AA	197
Phosphosite 6:	C1orf125	Q5T1B0	S903	LFETDVLSSWRESAK	85 / 7 AA	118
Phosphosite 7:	CST9	Q5W186	S75	YRLLRVLSSWREDSM	85 / 7 AA	18
Phosphosite 8:	C1orf125	Q5T1B0	S904	FETDVLSSWRESAKQ	85 / 7 AA	118
Phosphosite 9:	GLYATL3	Q5SZD4	S48	QKEVVLDSWPDFKAV	62 / 8 AA	33
Phosphosite 10:	GAB4	Q2WGN9	S23	DPAFAPLSSWPGSGP	55 / 9 AA	62
Phosphosite 11:	CADPS	Q9ULU8	S236	SKETVLSSWMAKFDA	100 / 6 AA	153
Phosphosite 12:	CADPS	Q9ULU8	S235	LSKETVLSSWMAKFD	100 / 6 AA	153
Phosphosite 13:	CADPS2	Q86UW7	S202	SKETVLSSWIAKYDA	100 / 6 AA	148
Phosphosite 14:	CADPS2	Q86UW7	S201	LSKETVLSSWIAKYD	100 / 6 AA	148
Phosphosite 15:	BTBD7	Q9P203	S172	PFFKTLLSSSPEYGA	75 / 8 AA	126
Phosphosite 16:	USP48	Q86UV5	S733	DKNRPCLSNWPEDTD	71 / 7 AA	119
Phosphosite 17:	SLC35B2	Q8TB61	S196	ASLSNVLSSWCQYEA	62 / 8 AA	48
Phosphosite 18:	AASDH	Q4L235	S330	PSLTVLRSWRGEGNK	71 / 7 AA	123
Phosphosite 19:	PAN2	Q504Q3	S409	LTTDTLLSDWPAANS	71 / 7 AA	135
Phosphosite 20:	SPHK1IP	Q2M3C7	S469	APQPGISSWPEMEVS	83 / 6 AA	186