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:	Rb
Human P-Site:	S644
P-Site Sequence:	QTQKPLKSTSLSLFY
UniProt:	P06400
Intern. Prot. ID:	IPI00302829

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	Rb	P06400	S644	QTQKPLKSTSLSLFY	100 / 9 AA	106
Phosphosite 1:	PHF17	Q6IE81	S687	QSHKPLRSTDVSQRH	66 / 9 AA	96
Phosphosite 2:	CXXC6	Q8NFU7	S108	GFTMALRSTSLSRRL	66 / 9 AA	235
Phosphosite 3:	MICALCL	Q6ZW33	S449	KLLQPFKSTSLRQAA	75 / 8 AA	77
Phosphosite 4:	ARPC1A	Q92747	S143	HIKKPIRSTVLSLDW	66 / 9 AA	42
Phosphosite 5:	ARPC1B	O15143	S143	HIKKPIRSTVLSLDW	66 / 9 AA	41
Phosphosite 6:	Rb	P06400	S646	QKPLKSTSLSLFYKK	100 / 7 AA	106
Phosphosite 7:	ADAMDEC1	O15204	S164	YQIKPLKSTDEKEHA	100 / 6 AA	53
Phosphosite 8:	CXXC6	Q8NFU7	T109	FTMALRSTSLSRRLS	75 / 8 AA	235
Phosphosite 9:	LTK	P29376	S849	SGLKPLKSRGLQPQN	75 / 8 AA	92
Phosphosite 10:	CCDC73	Q6ZRK6	S1018	VKTKPLISTPLQSHL	75 / 8 AA	124
Phosphosite 11:	FAM133B	Q5BKY9	S192	SEDKPLSSESLSESE	77 / 9 AA	28
Phosphosite 12:	CXXC6	Q8NFU7	S110	TMALRSTSLSRRLSQ	85 / 7 AA	235
Phosphosite 13:	KNTC1	P50748	S1233	SKRYPLESTSLPYCS	85 / 7 AA	251
Phosphosite 14:	SGEF	Q96DR7	S416	IHHKPLRSTWSQLSA	71 / 7 AA	97
Phosphosite 15:	ZBTB39	O15060	S136	ARAKPLTSTSESHSG	77 / 9 AA	79
Phosphosite 16:	FAM90A22	A8MWA6	T189	SLSPLRKTSLSSSSS	75 / 8 AA	50
Phosphosite 17:	ZBTB39	O15060	T135	TARAKPLTSTSESHS	85 / 7 AA	79
Phosphosite 18:	CLK3	P49761	S581	ENCKPLKSYMLQDSL	75 / 8 AA	59
Phosphosite 19:	CDC14A	Q9UNH5	S73	KLNKKLKSYSLSRKK	77 / 9 AA	67
Phosphosite 20:	C2orf55	Q6NV74	S688	PFPVKLRSTSLSLKY	85 / 7 AA	102