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:	HTR4
Human P-Site:	S378
P-Site Sequence:	QCHPPATSPLVAAQP
UniProt:	Q13639
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	HTR4	Q13639	S378	QCHPPATSPLVAAQP	100 / 9 AA	44
Phosphosite 1:	USP10	Q14694	S370	KYSPPAISPLVSEKQ	77 / 9 AA	87
Phosphosite 2:	RRP1B	Q14684	S736	PTSSPASSPLVAKKP	87 / 8 AA	84
Phosphosite 3:	C17orf46	Q96LK8	S347	LLQPPATSPLLQGSK	87 / 8 AA	42
Phosphosite 4:	OR10C1	Q96KK4	T269	KASYDPATDPLVSLF	85 / 7 AA	34
Phosphosite 5:	RRP1B	Q14684	S735	TPTSSPASSPLVAKK	85 / 7 AA	84
Phosphosite 6:	OTUD5	Q96G74	S508	AGADRATSPLVSLYP	75 / 8 AA	61
Phosphosite 7:	OTUD5	Q96G74	T507	SAGADRATSPLVSLY	85 / 7 AA	61
Phosphosite 8:	PLK4	O00444	S592	RTLRSITSPLVAHRL	100 / 6 AA	109
Phosphosite 9:	SKT	Q5T5P2	T1011	NLEMPPATGPLPRGD	85 / 7 AA	214
Phosphosite 10:	STON2	Q8WXE9	T248	SCPLPPVTSPLKPNT	85 / 7 AA	101
Phosphosite 11:	DEPDC1A	Q5TB30	T109	QLFRFPATSPLKTLP	100 / 6 AA	89
Phosphosite 12:	DEPDC1A	Q5TB30	S110	LFRFPATSPLKTLPR	100 / 6 AA	89
Phosphosite 13:	STON2	Q8WXE9	S249	CPLPPVTSPLKPNTP	85 / 7 AA	101
Phosphosite 14:	GGA3	Q9NZ52	S538	GLVKPTTSPLIPTTT	71 / 7 AA	78
Phosphosite 15:	NEURL4	Q96JN8	S1332	WGPPPAASPLKSCEY	85 / 7 AA	167
Phosphosite 16:	PHLDB1	Q86UU1	T219	AGKKPAATSPLSPMA	85 / 7 AA	151
Phosphosite 17:	PARP6	Q2NL67	S250	LPPPARTSPLVSGHC	66 / 9 AA	71
Phosphosite 18:	ActR2B	Q13705	S182	DPGPPPPSPLVGLKP	66 / 9 AA	58
Phosphosite 19:	MLL2	O14686	T816	PALEPSATSPLPSPM	85 / 7 AA	564
Phosphosite 20:	MLL2	O14686	S817	ALEPSATSPLPSPMG	85 / 7 AA	564