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:	CTPS
Human P-Site:	S421
P-Site Sequence:	LGWQDANSTEFDPTT
UniProt:	P17812
Intern. Prot. ID:	IPI00290142

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CTPS	P17812	S421	LGWQDANSTEFDPTT	100 / 9 AA	67
Phosphosite 1:	CTPS2	Q9NRF8	S421	LNLKDADSTEFRPNA	75 / 8 AA	66
Phosphosite 2:	ALDH1L2	Q3SY69	S850	GVLQRANSTEYGLAS	66 / 9 AA	102
Phosphosite 3:	KIAA0947	Q9Y2F5	S316	QSHRDGGSTEFVDHD	62 / 8 AA	248
Phosphosite 4:	SNX2	O60749	S228	VGKEDSSSTEFVEKR	62 / 8 AA	58
Phosphosite 5:	SNX2	O60749	S227	KVGKEDSSSTEFVEK	62 / 8 AA	58
Phosphosite 6:	CC2D1B	Q5T0F9	S751	AVVKNTNSPEFDQLF	55 / 9 AA	94
Phosphosite 7:	TTN	Q8WZ42	S20671	RIGLDIKSTDFDTFL	55 / 9 AA	3816
Phosphosite 8:	TMTC2	Q8N394	T743	KAAELDSTEFDVVFN	62 / 8 AA	94
Phosphosite 9:	TMTC2	Q8N394	S742	KKAAELDSTEFDVVF	62 / 8 AA	94
Phosphosite 10:	TTN	Q8WZ42	T20672	IGLDIKSTDFDTFLR	62 / 8 AA	3816
Phosphosite 11:	DNAH8	Q96JB1	T420	DILDPRRTEFDTDFL	62 / 8 AA	515
Phosphosite 12:	MADD	Q8WXG6	S470	NDLQSTPSTEFNPLI	55 / 9 AA	183
Phosphosite 13:	FRS2	Q8WU20	T284	SGSGANNTEWDTGYD	71 / 7 AA	57
Phosphosite 14:	KIAA0947	Q9Y2F5	T317	SHRDGGSTEFVDHDH	71 / 7 AA	248
Phosphosite 15:	PNPLA7	Q6ZV29	T123	SLLEADLTEFDVKNS	62 / 8 AA	146
Phosphosite 16:	FH	P07954	S222	HDALDAKSKEFAQII	71 / 7 AA	55
Phosphosite 17:	PDE4D	Q08499	S775	LCTQDSESTEIPLDE	62 / 8 AA	91
Phosphosite 18:	TREK1	O95069	S111	SQHSCVNSTELDELI	71 / 7 AA	47
Phosphosite 19:	SLC4A1AP	Q9BWU0	S113	TALQDSNSGEPDIPP	66 / 9 AA	89
Phosphosite 20:	MXI1	P50539	S183	EIEVDVESTEFSHGE	71 / 7 AA	26