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:	SOX21
Human P-Site:	S183
P-Site Sequence:	GSKMAEISSSSSGLP
UniProt:	Q9Y651
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	SOX21	Q9Y651	S183	GSKMAEISSSSSGLP	100 / 9 AA	29
Phosphosite 1:	PIK3C2A	O00443	S5	___MAQISSNSGFKE	66 / 9 AA	191
Phosphosite 2:	SOX21	Q9Y651	S184	SKMAEISSSSSGLPY	100 / 8 AA	29
Phosphosite 3:	STAC	Q99469	S80	AHMVAEISPSSSPLP	77 / 9 AA	45
Phosphosite 4:	BBX	Q8WY36	S252	LFQFAEISSSTSHSD	77 / 9 AA	105
Phosphosite 5:	POLR3C	Q9BUI4	T277	MLRMSEITTSSSAPF	66 / 9 AA	61
Phosphosite 6:	SOCS5	O75159	S311	APGMTEISGDSSAIP	66 / 9 AA	61
Phosphosite 7:	BBX	Q8WY36	S277	LFQFAEISSNTSQLG	66 / 9 AA	105
Phosphosite 8:	SLC5A11	Q8WWX8	S588	QNGMPEASSSSSVQF	77 / 9 AA	74
Phosphosite 9:	UBE2T	Q9NPD8	S129	DPLMADISSEFKYNK	83 / 6 AA	23
Phosphosite 10:	UBR5	O95071	S1145	KIAKAEISSSEKEED	85 / 7 AA	309
Phosphosite 11:	ATRX	P46100	T1201	KRKQADITSSSSSDI	66 / 9 AA	283
Phosphosite 12:	ORC1L	Q13415	S417	ILPAAEISDSSSDEE	87 / 8 AA	97
Phosphosite 13:	BBX	Q8WY36	S278	FQFAEISSNTSQLGG	75 / 8 AA	105
Phosphosite 14:	DOS	Q8N350	S264	ATDFAEISPSASSDS	66 / 9 AA	76
Phosphosite 15:	SOX21	Q9Y651	S185	KMAEISSSSSGLPYA	100 / 7 AA	29
Phosphosite 16:	C10orf115	Q5QP74	S39	RTTMTAISSSSHCTS	75 / 8 AA	10
Phosphosite 17:	FMO5	P49326	S410	SEMMAEISKAQEEID	100 / 5 AA	60
Phosphosite 18:	ATRX	P46100	S1202	RKQADITSSSSSDIE	75 / 8 AA	283
Phosphosite 19:	TPR	P12270	S528	VSSADISSSSEVISQ	85 / 7 AA	267
Phosphosite 20:	VPS13D	Q5THJ4	S3126	VKTAEISSSKRECHS	100 / 6 AA	492