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:	MSTN
Human P-Site:	S276
P-Site Sequence:	GLDCDEHSTESRCCR
UniProt:	O14793
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MSTN	O14793	S276	GLDCDEHSTESRCCR	100 / 9 AA	43
Phosphosite 1:	GDF11	O95390	S308	GLDCDEHSSESRCCR	88 / 9 AA	45
Phosphosite 2:	ANLN	Q9NQW6	S385	GERCQEHSKESPARS	66 / 9 AA	124
Phosphosite 3:	C4orf52	Q8N5G0	T47	PAPGPHSTESRGRRR	100 / 6 AA	18
Phosphosite 4:	C4orf52	Q8N5G0	S46	TPAPGPHSTESRGRR	100 / 6 AA	18
Phosphosite 5:	C10orf6	Q8IX21	S515	SKECSGHSTESTKHK	75 / 8 AA	132
Phosphosite 6:	C4orf52	Q8N5G0	S49	PGPHSTESRGRRRAG	100 / 6 AA	18
Phosphosite 7:	LIMA1	Q9UHB6	S155	GEDLKDHSTESKKME	71 / 7 AA	85
Phosphosite 8:	LIMA1	Q9UHB6	T156	EDLKDHSTESKKMEN	71 / 7 AA	85
Phosphosite 9:	WDR3	Q9UNX4	S533	ELVKDENSTQKRLSV	62 / 8 AA	106
Phosphosite 10:	CLK1	P49759	S423	RLDWDEHSSAGRYVS	62 / 8 AA	57
Phosphosite 11:	SNED1	Q8TER0	T1090	LRGEEHPTESLATAP	71 / 7 AA	152
Phosphosite 12:	POLD2	P49005	S251	AGNLLSHSTQSRDSI	83 / 6 AA	51
Phosphosite 13:	GTF2I	P78347	S16	LPVEDEESSESRMVV	75 / 8 AA	112
Phosphosite 14:	POLD2	P49005	T252	GNLLSHSTQSRDSIN	83 / 6 AA	51
Phosphosite 15:	TMPO	P42167	T154	LKLREQGTESRSSTP	71 / 7 AA	51
Phosphosite 16:	TMPO	P42166	T154	LKLREQGTESRSSTP	71 / 7 AA	75
Phosphosite 17:	PCSK7	Q16549	T736	KDPDEVETESRGPPT	75 / 8 AA	86
Phosphosite 18:	ZNF831	Q5JPB2	S1510	HIAQEIHSAESRDHS	62 / 8 AA	178
Phosphosite 19:	PHF21A	Q96BD5	T344	TETDEKQTESRTITP	75 / 8 AA	75
Phosphosite 20:	KBTBD2	Q8IY47	T206	MLWLEYNTESRSQYL	71 / 7 AA	71