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:	S223
P-Site Sequence:	RRHIRIRSLKIELHS
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	S223	RRHIRIRSLKIELHS	100 / 9 AA	45
Phosphosite 1:	CEP350	Q5VT06	S2632	ASVNRSRSLKIETDN	87 / 8 AA	351
Phosphosite 2:	UBE2V1	Q13404	S66	IYENRIYSLKIECGP	87 / 8 AA	16
Phosphosite 3:	ARRDC3	Q96B67	S46	TGEIRVKSLKIHARG	75 / 8 AA	46
Phosphosite 4:	CRYBA1	P05813	S65	RSFDNVRSLKVESGA	71 / 7 AA	25
Phosphosite 5:	UBE2V2	Q15819	S64	NYENRIYSLKVECGP	75 / 8 AA	16
Phosphosite 6:	STON2	Q8WXE9	S498	DENGRIHSLRIDRVT	62 / 8 AA	101
Phosphosite 7:	FAM55C	Q969Y0	S150	YLQARIHSLKLQAGA	62 / 8 AA	64
Phosphosite 8:	TTN	Q8WZ42	S3151	GRDVRIRSIKKEVQV	66 / 9 AA	3816
Phosphosite 9:	MSTN	O14793	S191	TRYTGIRSLKLDMNP	71 / 7 AA	43
Phosphosite 10:	CABLES2	Q9BTV7	S364	LTLSKIRSLKREMRS	75 / 8 AA	52
Phosphosite 11:	CABLES1	Q8TDN4	S518	LTLSKIRSLKREMRK	75 / 8 AA	68
Phosphosite 12:	PDE8B	O95263	S446	PSMARIHSMTIEAPI	62 / 8 AA	99
Phosphosite 13:	PDE8A	O60658	S386	SSMARIHSMTIEAPI	62 / 8 AA	93
Phosphosite 14:	SMC6L1	Q96SB8	S771	ENMEHLKSLKIEAEN	62 / 8 AA	126
Phosphosite 15:	CCDC61	Q9Y6R9	S154	VLQGIIRSLKEELGR	85 / 7 AA	53
Phosphosite 16:	C6orf120	Q7Z4R8	S71	KIVLRMRSLKGDADL	55 / 9 AA	21
Phosphosite 17:	C18orf34	Q5BJE1	S599	DEAERIRSLDKEHSV	75 / 8 AA	102
Phosphosite 18:	CCDC13	Q8IYE1	S319	KNLLRIRSLEREKQE	66 / 9 AA	81
Phosphosite 19:	SRGAP2	O75044	T379	QLQSRLSTLKIENEE	62 / 8 AA	121
Phosphosite 20:	Rap1GAP2	Q684P5	S505	KRAIRVRSHSMETMV	55 / 9 AA	80