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:	C4orf21
Human P-Site:	Y971
P-Site Sequence:	QFPDSTEYENFMTET
UniProt:	Q86YA3
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4orf21	Q86YA3	Y971	QFPDSTEYENFMTET	100 / 9 AA	119
Phosphosite 1:	KIAA1797	Q5VW36	Y684	LTVNTTEYENFKVQV	66 / 9 AA	200
Phosphosite 2:	Fer	P16591	Y260	QIDPSTEYNNFIDVH	75 / 8 AA	95
Phosphosite 3:	ATP6V0D1	P61421	Y54	LHLQSTDYGNFLANE	55 / 9 AA	40
Phosphosite 4:	COPB2	P35606	Y794	SLADPTEYENLFPGL	66 / 9 AA	102
Phosphosite 5:	COPB2	P35606	T792	AESLADPTEYENLFP	85 / 7 AA	102
Phosphosite 6:	SEC23B	Q15437	Y680	GYQDMPEYENFKHLL	66 / 9 AA	86
Phosphosite 7:	SEC23A	Q15436	Y678	GYQDMPEYENFRHLL	75 / 8 AA	86
Phosphosite 8:	LAX1	Q8IWV1	Y373	SNEDSSDYENVLTAK	55 / 9 AA	44
Phosphosite 9:	EXT1	Q16394	Y319	CDRDNTEYEKYDYRE	62 / 8 AA	86
Phosphosite 10:	Tiam2	Q8IVF5	Y459	DPLRQNIYENFMREL	100 / 5 AA	193
Phosphosite 11:	RA70	O75563	Y298	SGDKSTDYANFYQGL	71 / 7 AA	41
Phosphosite 12:	exportin 7	Q9UIA9	Y687	LGEDEDQYEQFMLPL	55 / 9 AA	124
Phosphosite 13:	eIF3-alpha	O75822	Y254	DGGYVQDYEDFM___	66 / 6 AA	29
Phosphosite 14:	FGD5	Q6ZNL6	Y1064	LCPDSAEYDNTQGAL	71 / 7 AA	160
Phosphosite 15:	TRPC7	Q9HCX4	Y53	RFLDSAEYGNIPVVR	62 / 8 AA	100
Phosphosite 16:	THOC2	Q8NI27	Y1090	NKADQLDYENFRHVV	55 / 9 AA	183
Phosphosite 17:	LAX1	Q8IWV1	S371	EMSNEDSSDYENVLT	71 / 7 AA	44
Phosphosite 18:	PPL	O60437	Y255	YPSRRRQYENFINRN	50 / 8 AA	205
Phosphosite 19:	ACRBP	Q8NEB7	Y43	SPLSPTEYERFFALL	62 / 8 AA	61
Phosphosite 20:	PASD1	Q8IV76	Y125	EHGDSSAYENVKFIV	55 / 9 AA	87