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:	GDF11
Human P-Site:	S308
P-Site Sequence:	GLDCDEHSSESRCCR
UniProt:	O95390
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	GDF11	O95390	S308	GLDCDEHSSESRCCR	100 / 9 AA	45
Phosphosite 1:	MSTN	O14793	S276	GLDCDEHSTESRCCR	88 / 9 AA	43
Phosphosite 2:	E2F8	A0AVK6	S453	MQLEEQSSESRQKVK	75 / 8 AA	94
Phosphosite 3:	ANLN	Q9NQW6	S385	GERCQEHSKESPARS	66 / 9 AA	124
Phosphosite 4:	CLK1	P49759	S423	RLDWDEHSSAGRYVS	75 / 8 AA	57
Phosphosite 5:	RHBDF1	Q96CC6	S559	PRVCDEPSSEDPHEW	85 / 7 AA	98
Phosphosite 6:	GTF2I	P78347	S16	LPVEDEESSESRMVV	87 / 8 AA	112
Phosphosite 7:	CLK3	P49761	S567	LVWDENSSDGRYVKE	62 / 8 AA	59
Phosphosite 8:	HEFL	Q9NQ75	S637	KQREDEHSSELLKKN	100 / 6 AA	87
Phosphosite 9:	SPATA21	Q7Z572	S455	QGNREHNSDSRKWLS	71 / 7 AA	52
Phosphosite 10:	RGPD1	Q68DN6	S1598	NSDIEHSSDSKVKNL	71 / 7 AA	197
Phosphosite 11:	C6orf103	Q8N7X0	S305	FKLSDEASSESKIAV	66 / 9 AA	86
Phosphosite 12:	A-Myb	P10243	T318	LNSLDEHTSEFYSMD	83 / 6 AA	86
Phosphosite 13:	NSD1	Q96L73	S655	DLDPIEHSSESDNSV	100 / 6 AA	297
Phosphosite 14:	NSD1	Q96L73	S656	LDPIEHSSESDNSVL	100 / 6 AA	297
Phosphosite 15:	SRRT	Q9BXP5	S88	RRDWDEHSSDPYHSG	71 / 7 AA	101
Phosphosite 16:	A-Myb	P10243	S319	NSLDEHTSEFYSMDE	83 / 6 AA	86
Phosphosite 17:	ZNF831	Q5JPB2	S1510	HIAQEIHSAESRDHS	62 / 8 AA	178
Phosphosite 18:	C6orf103	Q8N7X0	S306	KLSDEASSESKIAVL	75 / 8 AA	86
Phosphosite 19:	SSBP3	Q9BWW4	S84	RDTCEHSSEAKAFHD	71 / 7 AA	40
Phosphosite 20:	SSBP2	P81877	S86	RETCEHSSEAKAFHD	71 / 7 AA	38