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:	S551
P-Site Sequence:	GAPHRSYSECYPVLL
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	S551	GAPHRSYSECYPVLL	100 / 9 AA	128
Phosphosite 1:	POLR1B	Q9H9Y6	Y550	DGAPHRSYSECYPVL	100 / 8 AA	128
Phosphosite 2:	ZIMP7	Q8NF64	S270	QGVKRTYSEVYPGQQ	75 / 8 AA	97
Phosphosite 3:	POLR1B	Q9H9Y6	Y554	HRSYSECYPVLLDGV	100 / 6 AA	128
Phosphosite 4:	JAK2	O60674	Y590	LDKAHRNYSESFFEA	62 / 8 AA	131
Phosphosite 5:	JAK2	O60674	S591	DKAHRNYSESFFEAA	62 / 8 AA	131
Phosphosite 6:	FZD3	Q9NPG1	S108	RLCQRAYSECSKLME	71 / 7 AA	76
Phosphosite 7:	IK	Q13123	Y449	SNSYAECYPATMDDM	83 / 6 AA	66
Phosphosite 8:	FZD3	Q9NPG1	Y107	RRLCQRAYSECSKLM	71 / 7 AA	76
Phosphosite 9:	CATSPER1	Q8NEC5	Y111	AVPSHRSYGEDYHDE	75 / 8 AA	90
Phosphosite 10:	GAN	Q9H2C0	S272	NFKPRGYSECIVTVG	83 / 6 AA	68
Phosphosite 11:	MAP7D3	Q8IWC1	T492	KKRLSSYTECYKWSS	83 / 6 AA	98
Phosphosite 12:	GAN	Q9H2C0	Y271	ANFKPRGYSECIVTV	83 / 6 AA	68
Phosphosite 13:	FRMD4B	Q9Y2L6	Y925	ETPAHSSYTSCYGNV	62 / 8 AA	112
Phosphosite 14:	ILDR1	Q86SU0	S469	RRRHRSYSPPLPSGL	66 / 9 AA	63
Phosphosite 15:	MCF2	P10911	Y605	SETIWRKYSECAFFQ	71 / 7 AA	108
Phosphosite 16:	SHROOM4	Q9ULL8	S858	QSETPTYSECFASKG	50 / 8 AA	166
Phosphosite 17:	CHRD	Q9H2X0	Y152	RDPEHRSYSDRGEPG	83 / 6 AA	102
Phosphosite 18:	CHRD	Q9H2X0	S153	DPEHRSYSDRGEPGA	83 / 6 AA	102
Phosphosite 19:	CHRD	Q9H2X0	S151	PRDPEHRSYSDRGEP	83 / 6 AA	102
Phosphosite 20:	KRTAP21-2	Q3LI59	S80	LCYRRCYSSCY____	62 / 8 AA	9