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:	C19orf21
Human P-Site:	S278
P-Site Sequence:	QVVDDPGSLASVESP
UniProt:	Q8IVT2
Intern. Prot. ID:	IPI00217121

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C19orf21	Q8IVT2	S278	QVVDDPGSLASVESP	100 / 9 AA	75
Phosphosite 1:	SHANK1	Q9Y566	S50	QGSGAPGSLASVRGL	77 / 9 AA	225
Phosphosite 2:	GPRIN1	Q7Z2K8	S237	PRKEDPGSLRKVDPV	66 / 9 AA	102
Phosphosite 3:	TTBK1	Q5TCY1	T886	LDVSEPGTLSSVLKS	62 / 8 AA	143
Phosphosite 4:	NUDT14	O95848	S77	VERRFPGSLAAVDQD	85 / 7 AA	24
Phosphosite 5:	MMRN1	Q13201	S993	IDRSLPGSLANVVKS	85 / 7 AA	138
Phosphosite 6:	MAN1C1	Q9NR34	S97	APGEDDPSSWASPRR	75 / 8 AA	71
Phosphosite 7:	MAN1C1	Q9NR34	S98	PGEDDPSSWASPRRR	75 / 8 AA	71
Phosphosite 8:	APR-3	Q6UW56	S8	MAPHDPGSLTTLVPW	55 / 9 AA	25
Phosphosite 9:	PISD	Q9UG56	S282	HRRHFPGSLMSVNPG	85 / 7 AA	47
Phosphosite 10:	HOXC12	P31275	S189	AGAGDPGSLVSPLNP	85 / 7 AA	30
Phosphosite 11:	CDK1	P06493	S248	FPKWKPGSLASHVKN	85 / 7 AA	34
Phosphosite 12:	MLL2	O14686	S868	EPGQTPGSLASELKG	75 / 8 AA	564
Phosphosite 13:	AKAP9	Q99996	S3865	PADFNPGSLACSQLQ	71 / 7 AA	454
Phosphosite 14:	KLHL26	Q53HC5	S426	GGRNRAGSLASVERY	85 / 7 AA	68
Phosphosite 15:	WDR21C	Q8NA75	S67	QIHSWDPSSLASDRF	85 / 7 AA	44
Phosphosite 16:	WDR21C	Q8NA75	S68	IHSWDPSSLASDRFN	85 / 7 AA	44
Phosphosite 17:	DCAF4L1	Q3SXM0	S67	QIRSLDPSSLASDRF	85 / 7 AA	44
Phosphosite 18:	AP2B1	P63010	S572	CHIGSLASVYHKPPN	100 / 6 AA	105
Phosphosite 19:	DCAF4L1	Q3SXM0	S68	IRSLDPSSLASDRFN	85 / 7 AA	44
Phosphosite 20:	KLHL26	Q53HC5	S429	NRAGSLASVERYCPR	100 / 6 AA	68