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:	IGSF21
Human P-Site:	S351
P-Site Sequence:	PKIVMTPSRARVGDT
UniProt:	Q96ID5
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	IGSF21	Q96ID5	S351	PKIVMTPSRARVGDT	100 / 9 AA	52
Phosphosite 1:	NHSL1	Q5SYE7	S1352	NDEVMTPSRPRTTED	87 / 8 AA	171
Phosphosite 2:	IGSF21	Q96ID5	T349	KGPKIVMTPSRARVG	100 / 7 AA	52
Phosphosite 3:	NHSL1	Q5SYE7	T1350	DGNDEVMTPSRPRTT	85 / 7 AA	171
Phosphosite 4:	DKFZP434B061	Q9UF83	S485	ASLTMTPSRASLTRT	66 / 9 AA	59
Phosphosite 5:	ACP2	P11117	T28	NLVVMPPTRARSLRF	75 / 8 AA	48
Phosphosite 6:	MUC20	Q8N307	S361	LHPVITPSRASESSA	85 / 7 AA	72
Phosphosite 7:	MUC20	Q8N307	S190	PHPVITPSRASESSA	85 / 7 AA	72
Phosphosite 8:	DKFZP434B061	Q9UF83	T483	SRASLTMTPSRASLT	85 / 7 AA	59
Phosphosite 9:	MUC20	Q8N307	T359	DGLHPVITPSRASES	85 / 7 AA	72
Phosphosite 10:	MUC20	Q8N307	T207	DGPHPVITPSRASES	85 / 7 AA	72
Phosphosite 11:	MUC20	Q8N307	T188	DSPHPVITPSRASES	85 / 7 AA	72
Phosphosite 12:	C6orf132	Q5T0Z8	S729	SQEVSTPSQARGEGS	75 / 8 AA	124
Phosphosite 13:	CSNK2A1	P68400	S7	_MSGPVPSRARVYTD	100 / 6 AA	45
Phosphosite 14:	ULK1	O75385	T654	ARQGVVMTPPRNRTL	83 / 6 AA	113
Phosphosite 15:	FAM110A	Q9BQ89	S89	RRTVLTPSRRALPGP	83 / 6 AA	31
Phosphosite 16:	ARFIP1	P53367	S79	PPLPSVMSPSRVAAS	83 / 6 AA	42
Phosphosite 17:	NCOA4	Q13772	S480	APKAMTPSRIADSFQ	83 / 6 AA	70
Phosphosite 18:	CSMD2	Q7Z408	S2900	CGNPGTPSNARVVFS	85 / 7 AA	380
Phosphosite 19:	PIK3R4	Q99570	S1183	ISSHCHPSRARIRRL	83 / 6 AA	153
Phosphosite 20:	C16orf62	Q7Z3J2	T534	ADVIKHMTPDRAFED	83 / 6 AA	110