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:	S201
P-Site Sequence:	GGLDSEESYPYEATE
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	S201	GGLDSEESYPYEATE	100 / 9 AA	38
Phosphosite 1:	CTSL2	O60911	S201	GGLDSEESYPYVAVD	100 / 8 AA	37
Phosphosite 2:	CTSL1	P07711	Y202	GLDSEESYPYEATEE	100 / 8 AA	38
Phosphosite 3:	CTSL2	O60911	Y202	GLDSEESYPYVAVDE	100 / 7 AA	37
Phosphosite 4:	CTSS	P25774	S203	KGIDSDASYPYKAMD	75 / 8 AA	37
Phosphosite 5:	CTSL1	P07711	Y204	DSEESYPYEATEESC	100 / 6 AA	38
Phosphosite 6:	cathepsin K	P43235	Y201	GIDSEDAYPYVGQEE	71 / 7 AA	37
Phosphosite 7:	ENPP5	Q9UJA9	S430	AEYDQEGSYPYFIGV	75 / 8 AA	55
Phosphosite 8:	USP54	Q70EL1	Y400	TDSSTESYPYKHSHH	85 / 7 AA	187
Phosphosite 9:	C9orf4	Q9P0K9	Y132	RYLSEEGYPFPTAPP	71 / 7 AA	37
Phosphosite 10:	CTSS	P25774	Y204	GIDSDASYPYKAMDQ	71 / 7 AA	37
Phosphosite 11:	USP54	Q70EL1	S399	RTDSSTESYPYKHSH	85 / 7 AA	187
Phosphosite 12:	CDK12	Q9NYV4	S889	RLYNSEESRPYTNKV	75 / 8 AA	164
Phosphosite 13:	CTSL1	P07711	S198	QDNGGLDSEESYPYE	100 / 6 AA	38
Phosphosite 14:	CTSL2	O60911	S198	KENGGLDSEESYPYV	100 / 6 AA	37
Phosphosite 15:	SP5	Q6BEB4	Y121	TPPADPSYPYEFSPV	62 / 8 AA	42
Phosphosite 16:	SP5	Q6BEB4	S120	LTPPADPSYPYEFSP	62 / 8 AA	42
Phosphosite 17:	CCDC80	Q76M96	Y248	TLQVEERYPYPVRLE	83 / 6 AA	108
Phosphosite 18:	NT5C3	Q9H0P0	Y146	VLTVEEKYPYMVEWY	83 / 6 AA	38
Phosphosite 19:	exonuclease 1	Q9UQ84	S587	FTDEESYSFESSKFT	71 / 7 AA	94
Phosphosite 20:	exonuclease 1	Q9UQ84	S585	TVFTDEESYSFESSK	71 / 7 AA	94