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:	KIF21B
Human P-Site:	S538
P-Site Sequence:	ASSMEDASEVIRRAK
UniProt:	O75037
Intern. Prot. ID:	IPI00397809

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	KIF21B	O75037	S538	ASSMEDASEVIRRAK	100 / 9 AA	183
Phosphosite 1:	C19orf57	Q0VDD7	T605	ASRMEDATNVVRGLI	66 / 9 AA	70
Phosphosite 2:	PPP2R2C	Q9Y2T4	T222	PANMEDLTEVITASE	75 / 8 AA	52
Phosphosite 3:	ERP44	Q9BS26	S72	HPIFEEASDVIKEEF	55 / 9 AA	47
Phosphosite 4:	NRXN3	Q9Y4C0	S1558	IRRVPGASEVIRESS	66 / 9 AA	181
Phosphosite 5:	PI4K2B	Q8TCG2	S5	___MEDPSEPDRLAS	66 / 9 AA	55
Phosphosite 6:	AHI1	Q8N157	T987	KQRLETVTEVIRSCA	55 / 9 AA	137
Phosphosite 7:	RTN4IP1	Q8WWV3	S241	AVCSQDASELVRKLG	62 / 8 AA	44
Phosphosite 8:	FOXP4	Q8IVH2	S7	_MMVESASETIRSAP	66 / 9 AA	73
Phosphosite 9:	ERK4	P31152	S376	PDRCQDASEVQRDPR	75 / 8 AA	63
Phosphosite 10:	NDK7	Q9Y5B8	S191	ARTDASESIRALFGT	85 / 7 AA	42
Phosphosite 11:	RNF44	Q7L0R7	S425	PICRADASEVPREAE	85 / 7 AA	48
Phosphosite 12:	MRGPRX1	Q96LB2	S299	QRALQDASEVDEGGG	71 / 7 AA	36
Phosphosite 13:	RNF38	Q9H0F5	S508	PICRADASEVHRDSE	85 / 7 AA	58
Phosphosite 14:	RasGRF1	Q13972	S1097	DISNLIASEIIRNED	83 / 6 AA	145
Phosphosite 15:	SELH	Q8IZQ5	T35	GEGMEEATVVIEHCT	62 / 8 AA	13
Phosphosite 16:	HCN1	O60741	S203	TGTVNEDSSEIILDP	71 / 7 AA	99
Phosphosite 17:	POLR2D	O15514	S18	GDVEEDASQLIFPKE	71 / 7 AA	16
Phosphosite 18:	SIRT1	Q96EB6	S693	EEPMEDESEIEEFYN	71 / 7 AA	82
Phosphosite 19:	VAMP8	Q9BV40	S5	___MEEASEGGGNDR	83 / 6 AA	11
Phosphosite 20:	BCL9L	Q86UU0	S1311	VLNDPELSEVIRPTP	71 / 7 AA	157