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:	CDK4
Human P-Site:	S81
P-Site Sequence:	LMDVCATSRTDREIK
UniProt:	P11802
Intern. Prot. ID:	IPI00007811

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CDK4	P11802	S81	LMDVCATSRTDREIK	100 / 9 AA	34
Phosphosite 1:	CDK6	Q00534	S86	LFDVCTVSRTDRETK	77 / 9 AA	37
Phosphosite 2:	TLL1	O43897	T153	PRAATSRTERIWPGG	85 / 7 AA	115
Phosphosite 3:	VPS4A	Q9UN37	S362	FKKVCGPSRTNPSMM	55 / 9 AA	49
Phosphosite 4:	AMBRA1	Q9C0C7	T1078	TSRATWRTDRDMGLM	85 / 7 AA	143
Phosphosite 5:	MACF1	Q9UPN3	S1077	RIQSLASSRTDRDAW	85 / 7 AA	620
Phosphosite 6:	TTBK2	Q6IQ55	S499	KPCVPAVSRTDHIWH	66 / 9 AA	137
Phosphosite 7:	WBSCR27	Q8N6F8	T166	PGGLVCLTTRTNWSN	62 / 8 AA	27
Phosphosite 8:	DTNBP1	Q96EV8	T337	TALATSHTDREATPD	85 / 7 AA	39
Phosphosite 9:	FBXO34	Q9NWN3	S353	VSVDCGPSRADRCSP	62 / 8 AA	79
Phosphosite 10:	MACF1	Q9UPN3	T1079	QSLASSRTDRDAWQD	85 / 7 AA	620
Phosphosite 11:	CILP2	Q8IUL8	S255	VPGVCADSRANIRAQ	62 / 8 AA	126
Phosphosite 12:	STAC2	Q6ZMT1	T188	EPPPVCATSKESPPT	83 / 6 AA	44
Phosphosite 13:	STAC2	Q6ZMT1	S189	PPPVCATSKESPPTG	83 / 6 AA	44
Phosphosite 14:	CFI	P05156	T77	NGTAVCATNRRSFPT	83 / 6 AA	66
Phosphosite 15:	ZFR2	Q9UPR6	S387	TGPSVCASSRPALAK	83 / 6 AA	101
Phosphosite 16:	TLL2	Q9Y6L7	T155	RRATTSRTERIWPGG	71 / 7 AA	114
Phosphosite 17:	SF3B1	O75533	T316	GWAETPRTDRGGDSI	71 / 7 AA	146
Phosphosite 18:	NCAPD2	Q15021	T1219	QRFRTSRTERQQRDL	83 / 6 AA	157
Phosphosite 19:	CDK6	Q00534	T84	VRLFDVCTVSRTDRE	71 / 7 AA	37
Phosphosite 20:	TLL2	Q9Y6L7	S153	RVRRATTSRTERIWP	71 / 7 AA	114