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:	POLR1B
Human P-Site:	Y550
P-Site Sequence:	DGAPHRSYSECYPVL
UniProt:	Q9H9Y6
Intern. Prot. ID:	IPI00418797

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	POLR1B	Q9H9Y6	Y550	DGAPHRSYSECYPVL	100 / 9 AA	128
Phosphosite 1:	POLR1B	Q9H9Y6	S551	GAPHRSYSECYPVLL	100 / 8 AA	128
Phosphosite 2:	JAK2	O60674	Y590	LDKAHRNYSESFFEA	55 / 9 AA	131
Phosphosite 3:	JAK2	O60674	S591	DKAHRNYSESFFEAA	62 / 8 AA	131
Phosphosite 4:	FZD3	Q9NPG1	S108	RLCQRAYSECSKLME	71 / 7 AA	76
Phosphosite 5:	KRBA1	A5PL33	S430	PELQPHRSHSEEATR	85 / 7 AA	108
Phosphosite 6:	FZD3	Q9NPG1	Y107	RRLCQRAYSECSKLM	71 / 7 AA	76
Phosphosite 7:	CATSPER1	Q8NEC5	Y111	AVPSHRSYGEDYHDE	66 / 9 AA	90
Phosphosite 8:	FRMD4B	Q9Y2L6	Y925	ETPAHSSYTSCYGNV	55 / 9 AA	112
Phosphosite 9:	GAN	Q9H2C0	S272	NFKPRGYSECIVTVG	83 / 6 AA	68
Phosphosite 10:	MAP7D3	Q8IWC1	T492	KKRLSSYTECYKWSS	83 / 6 AA	98
Phosphosite 11:	SIPA1	Q96FS4	S770	ESGRPRRSFSELYTL	71 / 7 AA	112
Phosphosite 12:	GAN	Q9H2C0	Y271	ANFKPRGYSECIVTV	83 / 6 AA	68
Phosphosite 13:	ODZ3	Q9P273	Y110	MGLPHRGYSISAGSD	62 / 8 AA	301
Phosphosite 14:	MCF2	P10911	Y605	SETIWRKYSECAFFQ	71 / 7 AA	108
Phosphosite 15:	POLR1B	Q9H9Y6	Y554	HRSYSECYPVLLDGV	100 / 5 AA	128
Phosphosite 16:	CHRD	Q9H2X0	Y152	RDPEHRSYSDRGEPG	83 / 6 AA	102
Phosphosite 17:	CHRD	Q9H2X0	S153	DPEHRSYSDRGEPGA	83 / 6 AA	102
Phosphosite 18:	CHRD	Q9H2X0	S151	PRDPEHRSYSDRGEP	83 / 6 AA	102
Phosphosite 19:	C2orf47	Q8WWC4	Y96	PACPQRSYSTEEKPQ	83 / 6 AA	33
Phosphosite 20:	SLC4A3	P48751	S65	DPEKPSRSYSERDFE	85 / 7 AA	136