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:	CTSL1
Human P-Site:	Y125
P-Site Sequence:	VDWREKGYVTPVKNQ
UniProt:	P07711
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CTSL1	P07711	Y125	VDWREKGYVTPVKNQ	100 / 9 AA	38
Phosphosite 1:	CTSL3	Q5NE16	Y70	VDWREKGYVTPVKDQ	100 / 9 AA	25
Phosphosite 2:	cathepsin K	P43235	Y126	VDYRKKGYVTPVKNQ	88 / 9 AA	37
Phosphosite 3:	CTSL2	O60911	Y125	VDWRKKGYVTPVKNQ	88 / 9 AA	37
Phosphosite 4:	cathepsin K	P43235	T128	YRKKGYVTPVKNQGQ	100 / 7 AA	37
Phosphosite 5:	CTSL1	P07711	T127	WREKGYVTPVKNQGQ	100 / 7 AA	38
Phosphosite 6:	CTSL2	O60911	T127	WRKKGYVTPVKNQKQ	100 / 7 AA	37
Phosphosite 7:	CTSL3	Q5NE16	T72	WREKGYVTPVKDQCN	100 / 7 AA	25
Phosphosite 8:	DRAM1	Q8N682	Y195	WNPREKDYVYHVVSA	66 / 9 AA	26
Phosphosite 9:	SLC5A7	Q9GZV3	Y111	KPMRSKGYVTMLDPF	85 / 7 AA	63
Phosphosite 10:	STAP2	Q9UGK3	Y310	LPNQEENYVTPIGDG	55 / 9 AA	45
Phosphosite 11:	MSC	O60682	Y172	EDRYENGYVHPVNLT	75 / 8 AA	22
Phosphosite 12:	ERBB4	Q15303	Y1150	GELDEEGYMTPMRDK	62 / 8 AA	147
Phosphosite 13:	EXOSC8	Q96B26	Y78	TDAPDKGYVVPNVDL	62 / 8 AA	30
Phosphosite 14:	IDS	P22304	Y128	QYFKENGYVTMSVGK	71 / 7 AA	62
Phosphosite 15:	BCL2L2	Q92843	Y27	YKLRQKGYVCGAGPG	83 / 6 AA	21
Phosphosite 16:	MTHFD2	P13995	Y304	GVRQKAGYITPVPGG	83 / 6 AA	38
Phosphosite 17:	ARSE	P51690	Y138	KILKEKGYATGLIGK	55 / 9 AA	66
Phosphosite 18:	TCF21	O43680	Y144	NDKYENGYIHPVNLT	62 / 8 AA	20
Phosphosite 19:	FMR1	Q06787	Y461	RTDKEKSYVTDDGQG	71 / 7 AA	71
Phosphosite 20:	FMR1	Q06787	S460	NRTDKEKSYVTDDGQ	71 / 7 AA	71