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:	CBS
Human P-Site:	S73
P-Site Sequence:	HHTAPAKSPKILPDI
UniProt:	P35520
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CBS	P35520	S73	HHTAPAKSPKILPDI	100 / 9 AA
Phosphosite 1:	piccolo	Q9Y6V0	S3550	LAPSPPKSPKVLYSP	66 / 9 AA	567
Phosphosite 2:	AFF1	P51825	S245	KGYCPAKSPKDLAVK	87 / 8 AA	131
Phosphosite 3:	GPATCH4	Q5T3I0	S139	DDNQGSKSPKILTDE	85 / 7 AA	50
Phosphosite 4:	MybBP1A	Q9BQG0	S1248	SPSTPAKSPKLQKKN	75 / 8 AA	149
Phosphosite 5:	AIFM3	Q96NN9	S300	LLLAPGSSPKTLSCK	66 / 9 AA	67
Phosphosite 6:	KDELC1	Q6UW63	S124	QGQHVAKSPYILKGP	85 / 7 AA	58
Phosphosite 7:	MAST3	O60307	S1215	HPPAPARSPRLRRGQ	62 / 8 AA	143
Phosphosite 8:	TRDN	Q13061	S409	KHVEPAKSPKKEHSV	85 / 7 AA	82
Phosphosite 9:	MUC5AC	P98088	S4214	LPPAPATSPSISTSE	75 / 8 AA	527
Phosphosite 10:	FBXW7	Q969H0	S372	WRRGELKSPKVLKGH	83 / 6 AA	80
Phosphosite 11:	KDELC1	Q6UW63	Y126	QHVAKSPYILKGPVY	85 / 7 AA	58
Phosphosite 12:	ATP1A4	Q13733	S163	YYQEAKSSKIMESFK	71 / 7 AA	114
Phosphosite 13:	ATP1A2	P50993	S153	YYQEAKSSKIMDSFK	71 / 7 AA	112
Phosphosite 14:	DTL	Q9NZJ0	S608	DSLGPTKSSKIEGAG	62 / 8 AA	79
Phosphosite 15:	ATP1A4	Q13733	S162	SYYQEAKSSKIMESF	71 / 7 AA	114
Phosphosite 16:	ATP1A2	P50993	S152	SYYQEAKSSKIMDSF	71 / 7 AA	112
Phosphosite 17:	MUC5AC	P98088	T4213	TLPPAPATSPSISTS	75 / 8 AA	527
Phosphosite 18:	C1orf63	Q9BUV0	S274	TEEASSRSPKIDQKK	62 / 8 AA	34
Phosphosite 19:	Abl	P00519	S659	DTADPAKSPKPSNGA	100 / 6 AA	123
Phosphosite 20:	ASXL1	Q8IXJ9	S1262	SNAAPGKSPGDLTTS	66 / 9 AA	165