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:	S773
P-Site Sequence:	TNILQYASTRPPTLS
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	S773	TNILQYASTRPPTLS	100 / 9 AA	106
Phosphosite 1:	Rb	P06400	T774	NILQYASTRPPTLSP	100 / 8 AA	106
Phosphosite 2:	Rb	P06400	Y771	LKTNILQYASTRPPT	100 / 7 AA	106
Phosphosite 3:	HOXB9	P17482	S36	PSGQYASSRQPGHAE	75 / 8 AA	28
Phosphosite 4:	HOXB9	P17482	S35	FPSGQYASSRQPGHA	75 / 8 AA	28
Phosphosite 5:	OSBPL7	Q9BZF2	T81	DGILHYATTRQDITK	62 / 8 AA	95
Phosphosite 6:	ARHGAP13	Q7Z6B7	T478	HRAEYMTTRPPNVPP	62 / 8 AA	124
Phosphosite 7:	HS6ST1	O60243	S321	RPFMQYNSTRAGGVE	62 / 8 AA	48
Phosphosite 8:	ARHGAP13	Q7Z6B7	T477	GHRAEYMTTRPPNVP	62 / 8 AA	124
Phosphosite 9:	RANBP17	Q9H2T7	S288	SCLVQFASTRRSLFN	55 / 9 AA	124
Phosphosite 10:	HS6ST1	O60243	Y319	FIRPFMQYNSTRAGG	71 / 7 AA	48
Phosphosite 11:	RLF	Q13129	S86	QTLLQYASNKNASEH	71 / 7 AA	218
Phosphosite 12:	TCTN1	Q2MV58	T51	TFGTFPSTRPPGTPR	71 / 7 AA	64
Phosphosite 13:	TCTN1	Q2MV58	S50	ATFGTFPSTRPPGTP	71 / 7 AA	64
Phosphosite 14:	MATN2	O00339	S103	VGLLQYGSTVKNEFS	83 / 6 AA	107
Phosphosite 15:	MATN2	O00339	Y101	TRVGLLQYGSTVKNE	83 / 6 AA	107
Phosphosite 16:	HOXB9	P17482	Y33	AKFPSGQYASSRQPG	83 / 6 AA	28
Phosphosite 17:	C18orf25	Q96B23	Y364	KHGSGTQYVSTRQTQ	83 / 6 AA	43
Phosphosite 18:	C18orf25	Q96B23	S366	GSGTQYVSTRQTQSW	71 / 7 AA	43
Phosphosite 19:	MEF2D	Q14814	S59	NKLFQYASTDMDKVL	83 / 6 AA	56
Phosphosite 20:	MEF2C	Q06413	S59	NKLFQYASTDMDKVL	83 / 6 AA	51