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:	S496
P-Site Sequence:	SSNNSRISDDITDMI
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	S496	SSNNSRISDDITDMI	100 / 9 AA	119
Phosphosite 1:	TTN	Q8WZ42	S540	KEQETRISEEITKKQ	55 / 9 AA	3816
Phosphosite 2:	Rgs6	P49758	S311	EPSNPWISDDVALWD	55 / 9 AA	54
Phosphosite 3:	ABCB11	O95342	S203	GELNTRFSDDINKIN	75 / 8 AA	146
Phosphosite 4:	ACIN1	Q9UKV3	S898	HADDSRISEDETERN	66 / 9 AA	152
Phosphosite 5:	HSF2	Q03933	S243	LKPRERISDDIIIYD	100 / 6 AA	60
Phosphosite 6:	IMPACT	Q9P2X3	S42	KIFCIRISDDIDDPK	100 / 6 AA	36
Phosphosite 7:	RAD9B	Q6WBX8	S25	VQALSRISDEFWLDP	71 / 7 AA	48
Phosphosite 8:	RFWD2	Q8NHY2	S380	STRMSRISDDSRTAS	100 / 6 AA	80
Phosphosite 9:	C4orf21	Q86YA3	S493	QIESSNNSRISDDIT	100 / 6 AA	119
Phosphosite 10:	C7orf63	A5D8W1	S128	PFLKKKVSDEITYAE	44 / 9 AA	106
Phosphosite 11:	NELF	Q6X4W1	S209	MYSVDRVSDDIPIRT	83 / 6 AA	60
Phosphosite 12:	C10orf119	Q9BTE3	S566	RFLEYSISDEITKAV	83 / 6 AA	73
Phosphosite 13:	PDE8B	O95263	S218	LAVVSRVSDDHEEAS	83 / 6 AA	99
Phosphosite 14:	TARBP1	Q13395	S1442	IPWNSRVSDLDLELL	83 / 6 AA	182
Phosphosite 15:	CHMP7	Q8WUX9	S417	SVPNPRISDAELEAE	83 / 6 AA	51
Phosphosite 16:	XRN1	Q8IZH2	S56	DDVHFRISDDKIFTD	71 / 7 AA	194
Phosphosite 17:	RUNX2	Q13950	S340	TDVPRRISDDDTATS	85 / 7 AA	57
Phosphosite 18:	DOCK6	Q96HP0	S1661	VLEESAISDDILSPD	75 / 8 AA	230
Phosphosite 19:	STAMBPL1	Q96FJ0	S43	LGCNITISEDITPRR	83 / 6 AA	50
Phosphosite 20:	CNOT6	Q9ULM6	S68	NSLSRIPSDIAKLHN	62 / 8 AA	63