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:	CTSB
Human P-Site:	Y215
P-Site Sequence:	SKICEPGYSPTYKQD
UniProt:	P07858
Intern. Prot. ID:	IPI00295741

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CTSB	P07858	Y215	SKICEPGYSPTYKQD	100 / 9 AA	38
Phosphosite 1:	CTSB	P07858	S216	KICEPGYSPTYKQDK	100 / 8 AA	38
Phosphosite 2:	LTBP4	Q8N2S1	Y1039	TPACDPGYQPTPGGG	75 / 8 AA	173
Phosphosite 3:	C4BPA	P04003	Y336	RYRCHPGYKPTTDEP	75 / 8 AA	67
Phosphosite 4:	CSMD2	Q7Z408	Y1242	SFSCDPGYSLRGSEE	83 / 6 AA	380
Phosphosite 5:	RELN	P78509	Y2877	QCICDPGYSGPNCYL	83 / 6 AA	388
Phosphosite 6:	RELN	P78509	Y2154	KCICDPGYSGPTCKI	83 / 6 AA	388
Phosphosite 7:	LGALS4	P56470	Y9	AYVPAPGYQPTYNPT	75 / 8 AA	36
Phosphosite 8:	GTPBP6	O43824	Y313	KVDLVPGYSPTEPNV	100 / 6 AA	45
Phosphosite 9:	FBLN2	P98095	Y755	ALTCEPGYALKDGEC	83 / 6 AA	127
Phosphosite 10:	CSMD2	Q7Z408	Y1939	SFQCEPGYALQGHAH	83 / 6 AA	380
Phosphosite 11:	POLR2A	P24928	Y1947	YSPTSPGYSPTSPTY	100 / 6 AA	217
Phosphosite 12:	POLR2A	P24928	S1948	SPTSPGYSPTSPTYS	100 / 6 AA	217
Phosphosite 13:	HMCN1	Q96RW7	Y5221	HCGCEPGYQLKGRKC	100 / 5 AA	613
Phosphosite 14:	CR1L	Q2VPA4	Y322	FYSCEPGYDLRGSTY	100 / 5 AA	63
Phosphosite 15:	MEGF11	A6BM72	Y339	ACECEPGYKGPRCQE	100 / 5 AA	111
Phosphosite 16:	CUL4A	Q13619	Y532	VNILTMGYWPTYTPM	83 / 6 AA	88
Phosphosite 17:	THPO	P40225	Y292	PPNLQPGYSPSPTHP	71 / 7 AA	38
Phosphosite 18:	TLL1	O43897	Y605	QCACEPGYELGPDRR	100 / 5 AA	115
Phosphosite 19:	POLR2A	P24928	S1562	SGFSPGYSPAWSPTP	71 / 7 AA	217
Phosphosite 20:	TEX15	Q9BXT5	S786	NIFRPGFSPTADSLA	83 / 6 AA	315