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:	S500
P-Site Sequence:	TDTLGRLSHILEMDH
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	S500	TDTLGRLSHILEMDH	100 / 9 AA
Phosphosite 1:	CTPS	P17812	S552	LASVGRLSHYLQKGC	66 / 9 AA	67
Phosphosite 2:	PXR	O75469	S305	TWECGRLSYCLEDTA	75 / 8 AA	50
Phosphosite 3:	PXR	O75469	Y306	WECGRLSYCLEDTAG	75 / 8 AA	50
Phosphosite 4:	ARHGAP4	P98171	S133	GPLAQRLSHIAEDVG	85 / 7 AA	105
Phosphosite 5:	CCDC144C	Q8IYA2	S810	RDALGRESLILERVQ	77 / 9 AA	143
Phosphosite 6:	CCDC144A	A2RUR9	S997	RDALGRESLILERVQ	77 / 9 AA	165
Phosphosite 7:	KHDRBS2	Q5VWX1	S149	GEAYSRMSHALEEIK	62 / 8 AA	39
Phosphosite 8:	AP3B1	O00203	S623	HFQLGTLSHTLNIKA	66 / 9 AA	121
Phosphosite 9:	KIAA0232	Q92628	S615	GDSPVRLSPILDSTV	71 / 7 AA	155
Phosphosite 10:	Rapgef3	O95398	S918	QRELSRLSRELEP__	66 / 9 AA	104
Phosphosite 11:	KIAA0831	Q6ZNE5	S196	RLANLRRSHILELTS	85 / 7 AA	55
Phosphosite 12:	C8orf41	Q6NXR4	S204	EDEKGRLSVILGLLK	85 / 7 AA	57
Phosphosite 13:	ZMYM1	Q5SVZ6	S246	CYTSSSLSHILQMEG	62 / 8 AA	129
Phosphosite 14:	MYST3	Q92794	S690	LSDLGRLSYMAYWKS	71 / 7 AA	225
Phosphosite 15:	FBX38	Q6PIJ6	S876	TRARSRLSHVLLVSE	71 / 7 AA	134
Phosphosite 16:	R3HDM1	Q15032	S422	GSSTGSLSHIQQPLP	62 / 8 AA	121
Phosphosite 17:	STRN4	Q9NRL3	S537	GYDPSVLSHVLEGHG	83 / 6 AA	81
Phosphosite 18:	ACOX2	Q99424	T37	SFDVERLTNILDGGA	44 / 9 AA	77
Phosphosite 19:	GZMM	P51124	S160	THQGGRLSRVLRELD	71 / 7 AA	28
Phosphosite 20:	CRAT	P43155	Y606	NAARLAHYLEKALLD	71 / 7 AA	71