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:	CTSS
Human P-Site:	S203
P-Site Sequence:	KGIDSDASYPYKAMD
UniProt:	P25774
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CTSS	P25774	S203	KGIDSDASYPYKAMD	100 / 9 AA	37
Phosphosite 1:	CTSS	P25774	Y204	GIDSDASYPYKAMDQ	100 / 8 AA	37
Phosphosite 2:	CTSL2	O60911	S201	GGLDSEESYPYVAVD	75 / 8 AA	37
Phosphosite 3:	CTSL1	P07711	S201	GGLDSEESYPYEATE	75 / 8 AA	38
Phosphosite 4:	C18orf54	Q8IYD9	S37	NSSNSDGSFHYKDKL	55 / 9 AA	42
Phosphosite 5:	CWH43	Q9H720	S470	TILESDASKPYMGNN	66 / 9 AA	79
Phosphosite 6:	NPAL3	Q6P499	S27	SSAVSEASFSYKENL	62 / 8 AA	45
Phosphosite 7:	RBKS	Q9H477	S310	QAAGTQSSYPYKKDL	55 / 9 AA	34
Phosphosite 8:	USP54	Q70EL1	Y400	TDSSTESYPYKHSHH	75 / 8 AA	187
Phosphosite 9:	USP54	Q70EL1	S399	RTDSSTESYPYKHSH	75 / 8 AA	187
Phosphosite 10:	RBKS	Q9H477	Y311	AAGTQSSYPYKKDLP	62 / 8 AA	34
Phosphosite 11:	ENPP5	Q9UJA9	S430	AEYDQEGSYPYFIGV	62 / 8 AA	55
Phosphosite 12:	RAI17	Q9ULJ6	S145	TLSHSDGSFPYDSVP	71 / 7 AA	115
Phosphosite 13:	IQSEC2	Q5JU85	S138	RDKERDASYPLQDTT	55 / 9 AA	162
Phosphosite 14:	CTSL1	P07711	Y202	GLDSEESYPYEATEE	71 / 7 AA	38
Phosphosite 15:	CTSL2	O60911	Y202	GLDSEESYPYVAVDE	71 / 7 AA	37
Phosphosite 16:	KLF15	Q9UIH9	S47	SEDDSDASSPCSCSS	75 / 8 AA	44
Phosphosite 17:	CTSS	P25774	S200	IDNKGIDSDASYPYK	100 / 6 AA	37
Phosphosite 18:	DDX59	Q5T1V6	Y166	ESPLNASYVYKEHPF	71 / 7 AA	69
Phosphosite 19:	BAG4	O95429	Y300	QQPKDSSYPYSQSDQ	83 / 6 AA	50
Phosphosite 20:	NFAT2	O95644	Y193	ASSYESNYSYPYASP	62 / 8 AA	101