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:	spermidine synthase
Human P-Site:	Y278
P-Site Sequence:	VAQMQLKYYNSDVHR
UniProt:	P19623
Intern. Prot. ID:	IPI00292020

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	spermidine synthase	P19623	Y278	VAQMQLKYYNSDVHR	100 / 9 AA	34
Phosphosite 1:	spermidine synthase	P19623	Y279	AQMQLKYYNSDVHRA	100 / 8 AA	34
Phosphosite 2:	CHML	P26374	Y147	PEESQLSYFNSDEMP	75 / 8 AA	74
Phosphosite 3:	CELSR2	Q9HCU4	Y1459	WHTVQLKYYNKPLLG	85 / 7 AA	317
Phosphosite 4:	CELSR2	Q9HCU4	Y1460	HTVQLKYYNKPLLGQ	100 / 6 AA	317
Phosphosite 5:	MTMR13	Q86WG5	Y1777	TKHQLRYYDSGEDTS	62 / 8 AA	208
Phosphosite 6:	TReP-132	Q96PN7	Y410	EDSQLKTYSSDRQAQ	75 / 8 AA	132
Phosphosite 7:	TReP-132	Q96PN7	T409	REDSQLKTYSSDRQA	75 / 8 AA	132
Phosphosite 8:	SMC1A	Q14683	Y714	GLQMRLKYSQSDLEQ	66 / 9 AA	143
Phosphosite 9:	ZNF84	P51523	Y179	DTDTWLKYYDCDKYK	71 / 7 AA	85
Phosphosite 10:	ZNF84	P51523	Y180	TDTWLKYYDCDKYKE	71 / 7 AA	85
Phosphosite 11:	SPTBN4	Q9NRC6	Y936	LEVMQLKYENFLTAL	85 / 7 AA	417
Phosphosite 12:	MED1	Q15648	Y224	GHLMNLKYYVSPSDL	75 / 8 AA	168
Phosphosite 13:	MTBP	Q96DY7	T611	KELLKYFTSDGLPIG	71 / 7 AA	102
Phosphosite 14:	MTBP	Q96DY7	Y609	DAKELLKYFTSDGLP	71 / 7 AA	102
Phosphosite 15:	SCCPDH	Q8NBX0	Y137	LELMQLKYHEKAADK	71 / 7 AA	47
Phosphosite 16:	IDH2	P48735	Y81	HVDIQLKYFDLGLPN	57 / 7 AA	51
Phosphosite 17:	CHML	P26374	S146	LPEESQLSYFNSDEM	71 / 7 AA	74
Phosphosite 18:	DNAH1	Q9P2D7	Y1525	QWISQLRYYWTNNDL	50 / 8 AA	494
Phosphosite 19:	DNAH1	Q9P2D7	Y1526	WISQLRYYWTNNDLY	50 / 8 AA	494
Phosphosite 20:	VPS54	Q9P1Q0	Y779	RLSDLLKYFNSRSCQ	83 / 6 AA	111